Michel # 1346; Scott # 1245; Stanley Gibbons # 1344; Yvert # 1162;
The Cardinal butterfly .
Argynnis pandora.
Color: multicolored
Date of Issue: 13.09.1962
Face Value: 13 st
Designer: V.Tomov, A. Hof, V.Kantardzhieva, M.Velev, Al.Balkansky
Stamp Size: no information
Stamp Quantity: 300 000
Perforation: 10 ¾