In 2009  the Dutch Museum Association began an investigation into artworks that had been stolen, confiscated or sold under duress during the Nazi era between 1933 and the end of the Second World War.
163 museums out of 400 took part. (SEE MUSEUMS)

http://www.museumacquisitions.nl/en/10/home/

A report on the progress of research into Nazi looted art and duress sales was written by Prof. dr. Rudi E.O. Ekkart and drs. Helen C.M. Schretlen (Publication: Museumvereniging, 2014) and is available here:


 The results of the research conducted by each museum have been posted on the website http://www.museumacquisitions.nl,

SEARCH ITEMS HERE   

http://www.museumacquisitions.nl/46/objecten/

The following items were identified in the Dutch Museum Report as having potentially problematic provenances.
 (source : https://www.museumvereniging.nl/Portals/0/6-Publicaties/Bestanden/MV_Herkomstonderzoek_DEF.pdf) 

Rijksdienst voor het Cultureel Erfgoed, Amersfoort
– C.M. Dijkman, Mill
– J.D. Scherft, View of a Church in a Village
– A. Huissem, Landscape
– F.H. Mondriaan, Woodland Path in Haagse Bos
– Anonymous, Portrait Nicolaas Rockox
– Anonymous, Portrait of Adriana Perez



Amsterdam Museum, Amsterdam
– D. Meesters, The raft of Medusa
– C. van der Voort, Portrait of Anna Jacobsdr. Blaeu
– P.C. La Fargue, View of Gemeenlandshuis Swanenburg in Halfweg
– J. Lutma I, Two silver salt cellars
– Anonymous, Portrait of Joan Huydecoper
– Anonymous, Portrait of Wynolt Feelinck

Allard Pierson Museum, Amsterdam
– Anonymous, Bust of Tiberius

Ons’ Lieve Heer op Solder, Amsterdam
– I.C. van Swanenburg, L. Blondeel,
Portrait of Balich Occo Pompeiusdochter,
wife of Joost Buijck

Joods Historisch Museum, Amsterdam
– Anonymous (Germany), Funeral Bowl

Rijksmuseum, Amsterdam
– Jan Mijtens, Govert van Slingelandt (1623-90),
heer van Dubbeldam, met zijn eerste vrouw
Christina van Beveren en hun beide zoontjes
– A. Hanneman, Willem III (1650-1702),
prins van Oranje, als kind
– J.A. Kruseman, Salomé met het hoofd van
Johannes de Doper
– P. F. van Os, Anton Mauve
– A. Scheffer, Zelfportret op 43-jarige leeftijd
– Anoniem (kopie naar Joseph Vivien),
Maximilian II, keurvorst van Beieren, in de slag
bij Mohacs tegen de Turken
– Anoniem, Chariclea
– Moritz Calisch, Twee vrouwen in
Italiaanse dracht
– J. Lutma I, Twee zilveren zoutvaten
Stadsarchief Amsterdam, Amsterdam
– C. Philips Jacobsz, De Weteringpoort aan
de stadzijde
– P. van Liender, Het IJ bij het Blauwhoofd
– H.P. Schouten, Het Lutherse Diaconie Huys
tot Amsterdam
– S. Fokke of P.C. La Fargue (J. de Beijer),
Huis en sluisje einde Kadijk
– B.C. Koekkoek, Buiten de Zaagpoort
– J. Kops (H.P. Schouten), Schutsluisje
Leidseplein
– G. Lamberts, Schreierstoren en IJgezicht
– H. Tavenier, Blauwhoofd

Stedelijk Museum, Amsterdam
– J. Toorop, De Nachtlichten
– J. Toorop, De kokerplakkerij
– J. Toorop, Het magazijn
– J. Toorop, De gieterij
– J. Toorop, De pitpluisters
– J. Toorop, De vormerij
– G.J. Bos, Oude veteraan
– W. Kandinsky, Bild mit Häusern
– W. Kandinsky, Aquarell No. 2
– P. Klee, Massengebet
– H. Matisse, Odalisque
– H. Matisse, Staand naakt
– J. Maris, De schilder G.J. Hoffmann
– G. Poggenbeek, Frans Dorp
– P. de Regt, Wilde zuring langs de kant
– P. Schiedges, Ploegende ossen

Tropenmuseum, Amsterdam
– Anoniem, Estherrol met koker in houten
wandkast

Rijksmuseum, Amsterdam
– Jan Mijtens, Govert van Slingelandt (1623-90),
Lord of Dubbeldam, with his first wife
Christina van Beveren and two sons
– A. Hanneman, Willem III (1650-1702),
Prince of Orange as a Child
– J.A. Kruseman, Salomé with Head of
John the Bapist
– P. F. van Os, Anton Mauve
– A. Scheffer, Self Portrait at 43
– Anonymous (copy of Joseph Vivien),
Maximilian II, Elector of Bavaria, at the
Battle of Mohacs against the Turks
– Anonymous, Chariclea
– Moritz Calisch, Two Women in Italian
Costume
– J. Lutma I, Two silver salt cellars

Stadsarchief Amsterdam, Amsterdam
– C. Philips Jacobsz, Weteringpoort viewed
form the city
– P. van Liender, The IJ at Blauwhoofd
– H.P. Schouten, Lutherse Deanery in
Amsterdam
– S. Fokke or P.C. La Fargue (J. de Beijer),
House and Lock at Kadijk
– B.C. Koekkoek, Outside Zaagpoort
– J. Kops (H.P. Schouten), Leidseplein Lock
– G. Lamberts, View of the IJ and Schreijers
Tower
– H. Tavenier, Blauwhoofd

Stedelijk Museum, Amsterdam
– J. Toorop, Tea Lights
– J. Toorop, Finishing in Wicks
– J. Toorop, The Stockroom
– J. Toorop, Pouring Room
– J. Toorop, Pasting the Cylinders
– J. Toorop, Setting the Moulds
– G.J. Bos, Old Veteran
– W. Kandinsky, Bild mit Häusern
– W. Kandinsky, Aquarell No. 2
– P. Klee, Massengebet
– H. Matisse, Odalisque
– H. Matisse, Standing Nude
– J. Maris, The Artist G.J. Hoffmann
– G. Poggenbeek, French Village
– P. de Regt, Wild Sorrel on the Bank
– P. Schiedges, Oxen Ploughing

Tropenmuseum, Amsterdam
– Anonymous, Esther scroll with a case in a
wooden cabinet

 
Bijzondere Collecties, Amsterdam
– M. Monnickendam, Theatre Box
Paleis Het Loo, Apeldoorn
– H.A. d’Ainecy comte de Montpezat,
Willem II on Horseback

Museum Arnhem, Arnhem
– Anonymous, Römer depicting the arm of
Low Countries with the tekst ‘Anno 1623’
– H. Coster, Portrait of Helena Leideckers
– Koenraad Hecke, Decorated longcase clock
– S. Maris, Portrait of Women in White
– I. Israels, Children on the Beach
– W. Roelofs, Eifel Landscape with Mountain
Lake

Nederlands Openluchtmuseum, Arnhem
– Anonymous, Hunters on the Heath
– J. J. Spohler, Winter Landscape
– Anonymous, Marine view
– Anonymous, Three Men Drinking in an
Interior
– Anonymous, Three Horses in a Stable
– Anonymous, Tavern full of people

Drents Museum, Assen
– Anonymous, Pair of baluster-shapes Chinese
porcelain jars
– Anonymous, Pair of bulbous porcelain
vases
– Anonymous, Delftware plate with blue
floral and foliate decoration
Veluws Museum Nairac, Barneveld
– Rihouet Porcelain, Paris, Tableware set with
a crowned monogram SB

Museum Elisabeth Weeshuis, Culemborg
– Anonymous, Mezuzah
– Anonymous, Tefillin in a velvet bag
– Anonymous, Esther scroll
– Anonymous, Torah mantle
– Anonymous, Esther scroll
– Anonymous, Esther scroll

Museum Prinsenhof, Delft
– J.J. Goyen, View of Delft from the North
– Anonymous, Allegory of the Judicial Murder
of Johan van Oldenbarneveldt

Gemeentemuseum Den Haag, Den Haag
– Anoniem, Albarello
– Andries Grill, Bekerschroef
– Anoniem, Schaal met viervoeter
– Anoniem, Borstelrug met chinoiserie-decor
– Anoniem, Borstelrug met bloemdecor
– Anoniem, Borstelrug met chinoiserie-decor
met bloemvaasdecor
– M.A.J. Bauer, Oosters straatje (of markt
of tafereel)
– M. Maris, Landschap met boerenschuren
– J. Sluijters, Neger met gele lendedoek
– J. Toorop, In de Nes (Nachtleven)
– J. Toorop, De perskamer
– J. Toorop, De roerkuip
– J. Toorop, De gietsters
– J. Toorop, De rogneerkamer
– J. Toorop, De smelterij
– J. Toorop, De expeditie
– F. Verster, Witdelftse vaas en kom met viooltjes

Historisch Museum, Deventer
– Anoniem, Twee gedenkborden

Dordrechts Museum, Dordrecht
– J.G. Cuyp, Herderin met kind in een landschap

Van Abbemuseum, Eindhoven
– E. Lissitzky, Proun P 23, no. 6
– W. Kandinsky, Blick auf Murnau mit Kirche

Zuiderzeemuseum, Enkhuizen
– Anoniem, IJstjotter ‘Sperwer’

Rijksmuseum Twenthe, Enschede
– M. van Valckenborch, Landschap met oogstende
boeren

Noordbrabants Museum,
‘s-Hertogenbosch
– J. Sluijters, Knotwilgen aan de slatuinen

Museum de Fundatie, Heino
– A, Vittoria, Mozes

Westfries Museum, Hoorn
– Anoniem, Fontein met waterbekken
– Anoniem, Chanoekia
– Anoniem, Suikerstrooier (mogelijk een
Besamiembus)

Gemeentemuseum Den Haag, Den Haag
– Anonymous, Albarello
– Andries Grill, Cup stand
– Anonymous, Dish with quadruped motif
– Anonymous, Brush with chinoiserie motif
– Anonymous, Ribbed brush with floral decaration
– Anonymous, Brush with chinoiserie floral
vase motif
– M.A.J. Bauer, Oriental Street
– M. Maris, Landscape with barns
– J. Sluijters, African wearing a Yellow Loin-cloth
– J. Toorop, On Nes (Night Life)
– J. Toorop, Press room
– J. Toorop, Mixing Barrel
– J. Toorop, Pouring Wax
– J. Toorop, Cutting to Size
– J. Toorop, Melting the Wax
– J. Toorop, Dispatch
– F. Verster, White Delftware vase and bowl
woth voilet motif

Historisch Museum, Deventer
– Anonymous, Two commemoratieve plates

Dordrechts Museum, Dordrecht
– J.G. Cuyp, Shepherdess with Child in a Landscape
Van Abbemuseum, Eindhoven
– E. Lissitzky, Proun P 23, no. 6
– W. Kandinsky, Blick auf Murnau mit Kirche

Zuiderzeemuseum, Enkhuizen
– Anonymous, Ice-boat ‘Sperwer’

Rijksmuseum Twenthe, Enschede
– M. van Valckenborch, Peasants Harvesting
in a Landscape

Noordbrabants Museum,
‘s-Hertogenbosch
– J. Sluijters, Willows by a Cabbage Field

Museum de Fundatie, Heino
– A, Vittoria, Moses

Westfries Museum, Hoorn
– Anonymous, Font with Basin
– Anonymous, Chanukiah
– Anonymous, Suger coster (possible spice box)
 
Fries Museum, Leeuwarden
– L. Jacobsz., Abraham and the Three Angels

Museum De Lakenhal, Leiden
– A.H. Bakker Korff, Still Life with Chinese
Fugure
– J.L. Cornet, The Studio
– Jacob Fransz. van der Merck, Still Life
with Fruit
– F. Verster, Zinnias in a Green Ginger Jar

Museum aan het Vrijthof, Maastricht
– J. d’Arthois, Landscape with Rocks,
Moutain Stream and Abbey
Muiderslot, Muiden
– Anonymous, Pew

Museum Jan Cunen, Oss
– J. Stroebel, Studio of a Seventeenth -century
Dutch Painter
Kröller-Müller Museum, Otterlo
– I. Israels, Café-chantant on Nes in
Amsterdam
– G. Breitner, Excavating the construction site
of Maison de la Bourse
Tongerloohuys, Roosendaal
– Ferdinand Bol, Portrait of Pieter Bouwens
– Ferdinand Bol, Portrait of Anna Maria
van Nutt

Museum Boijmans Van Beuningen,
Rotterdam
– Meester vd legende vd H. Magdalena,
The Virgin and Child holding an Apple
– Hans Memling, The Lamentation
– Anonymous, Apothecary jar A3648
– Anonymous, Albarello A3602
– Anonymous, Dish A3619
– Anonymous, Dish A3638
– Anonymous, Apothecary jar A3648
– Anonymous, Dish A3649
– Anonymous, Dish A3653

Nederlands Zilvermuseum, Schoonhoven
– J. Frijthoff, Jad
musealeverwervingen.nl
Flipje en Streekmuseum, Tiel
– Anonymous, Two portratible silver lyre-shaped
pickle forks
– Anonymous, Meat fork with mother-of-pearl
grip
– Anonymous, Fork with a silver grip and a
bone blade
– Anonymous, Two meat forks with a silver grip

Museum Catharijneconvent, Utrecht
– H. Schuit (of Schuil), Portrait of a Person
in a Japanese Robe
– Anonymous, Lazarus and the Rich Man
Centraal Museum, Utrecht
– A.J. Mariënhof, The Annunciation to the
Shepherds
– J.B. Weenix, Portrait of the Van Wijkersloot
Family
– J.A. Wtewael, The Kitchen Maid
Zeeuws Maritiem MuZEEum, Vlissingen
– Anonymous, Empire pendulum clock

Veenkoloniaal museum, Veendam
– Anonymous, Mizrach

Stadsmuseum Woerden, Woerden
– Anonymous, Tapestry depicting a Hunting
Scene

Useful links

List of Dutch Museums Nazi Era Provenance Research
http://www.museumacquisitions.nl/musea/a/
(see list below)

List of items in Dutch Museums considered likely to have been stolen, confiscated or sold under duress between 1933 and 1945 
http://www.museumacquisitions.nl/46/objecten/
News

In 2015 the Amsterdam Museum, Zuiderzeemuseum, Dordrechts Museum, and Museum Tongerlohuys returned objects to their rightful claimants. - source: http://www.museumacquisitions.nl/en/1729/news/

• Netherlands Institute for Art History (RKD)
• Netherlands Institute for War, Genocide and Holocaust Studies (NIOD)
• Investigation of the Provenance of Art owned by the Dutch State
• Archive of Netherlands Art Property Foundation (Stichting Nederlands Kunstbezit, SNK) at the National Archives
• Database of Hitler’s collection for his museum at Linz
• Database with numerous names and backgrounds of auction houses, art dealers, collectors etc linked to the Second World War
• Database of art confiscated in Belgium and France by Einsatzstab Reichsleiter Rosenberg (ERR).
• This site also features digitalised auction catalogues.
• This American archive site (International Research Portal for Records Related to Nazi-Era Cultural Property) surveys various online sources that may prove helpful when investigating provenance

NAZI ERA PROVENANCE RESEARCH: LIST OF PARTICIPATING MUSEUMS