New bimetallic circulating commemorative:
"First crossing of the South Atlantic by plane"
External ring: copper-nickel
Center disc: nickel-brass, nickel and nickel-brass three layers
Diameter: 25.75 mm
Weight: 8.50 g
Thickness: 2.20 mm
Mint: Imprensa Nacional-Casa da Moeda (Portugal)
(image from eBay seller qramas)
LINK: Imprensa Nacional-Casa da Moeda
