I have a set of heavy cardboard farm s. I would guess they were manufactured in the 1950's possibly earlier. On one side is a lithograph color picture of the . On the reverse side of each is the name of the breed and a detailed description. They were designed to be placed in slotted wooden stands, which are also included. The collection shows ordinary wear. I have only the top of the original box. Can anyone help me to place a value on this set, I am interested in selling if the price is right.