How many revisions did the heads of the crouching figure undergo ?
The remains of a small hand on her back show that this was one of the versions that included a little Eros A " Crouching Venus " that was excavated at that quarry of antiquities , Hadrian 's Villa at Tivoli , in the 1920s , is accounted among the finest of the Roman versions ( Haskell and Penny 1981:323 ) .