Michel # 591; Scott # 578; Stanley Gibbons # 714; Yvert # 587;
The West African Helmet .
Cassis tessellata.
Color: multicolored
Date of Issue: 25.06.1974
Face Value: 1.50 E
Designer: no information
Stamp Size: 37 × 25 mm.
Stamp Quantity:no information
Perforation: 12:12½