Boat containing seated deity(?), standing attendant, nude man rowing

between 2350 B.C. and 2150 B.C.
black serpentine
24 x 14 mm
Morgan Seal 240
Provenance: 
Acquired by Pierpont Morgan sometime between 1885 and 1908.
Notes: 

"Seal 240, which cannot be related to any specific mythological concept, seems to depict a deity in a boat, raising a cup." Porada, CANES, p. 29

Summary: 

Boat containing seated deity(?), standing attendant, nude man rowing -- Crescent in sky.

Place: 
Southern Mesopotamia.
Period: 
Classification: 
Department: