Although many have forgotten the 73 Rd birthday of Sinhala Cinema which fell yesterday (21), two Yesteryear Sinhala Films "Dingiri Manika" (1956)and 'Sada Sulang " (1955)had been  screened to mark   this occassion  in " Tharangani "   cinema hall attached to  National Film Corporation  at Colombo -07  last  Monday and Tuesday evenings with the  courtesy   of Cinema conservationist Thissa