Leo III (717-741) and Pope Gregory III (731-741). AR 1/8 
Siliqua (0.39 gm). 

Crowned bust facing with short beard, wearing chlamys and 
holding cross on globe in right hand. Star in upper 
left and right fields. 
G R E O around a central cross. 

OHara/Vecchi 29; DOC III 92; MEC 1031; Sear Byz. 1534C 

Very rare.
With permission of Numismatic Ars Classica, May 1993.
Estimate 4,000-5,000 Swiss Francs.