Document sans nom

This famous crib of the 50s of the brand Hamker consists of 20 references and 1 variant. A cardboard set exists (see picture). Curiously there are no walls to make the sides of the crib. The small sheep is difficult to find because very small.
As the papers tells it, it is an ox which is in the crib. In this series, it is very likely that the first version was a cow because udders are present, and then corrected by deleting latter.