This well known toy consists of six blocks of wood taped together in a special way. When the blocks are manipulated in the correct way, a block apparently flips from the top of the ladder all the way down to the bottom. A white label on one of the blocks has on it: AU PRINTEMPS | 100.>> | PARIS. It was presumably purchased at the Parisian department store. The other YA-TA-GO label also refers to Breveté S.G.D.G. This was a French type of patent that ceased to exist in 1968. The name was a common abbreviation for “Breveté Sans Garantie Du Gouvernement“ (patent without government guarantees).