Go 'n' Back Jumbo

Go 'n' Back Jumbo is one of the 16 very first toys that were made by Fisher-Price in their beginnings in 1931. The Elephant is one of three Go 'n' Back toys from the Walky Balky toy line that were introduced in 1931, the other two are the #350 Go "n' Back Mule #355 Go "n' Back Bruno.   

The Walky Balky toys are propelled by a motor that makes the toys walk forward and back up unpredictably, just like real live animals. 

The name of this toy was changed in 1932 to Jumbo Bak-Up and a patent number was assigned. Unlike the 1931 Jumbo, the 1932 Jumbo has a permenantly attached key in his side.