This vintage toy is a miniature sofa or couch from the . The Doll House had various furniture sets that could be purchased separately and this is from the Sofa & Coffee Table Decorator Set #256. 

The sofa is made of white plastic and originally had a fabric cushion on top. The cushion is missing. There were various fabric patterns available on the cushions over the years, but the sofa piece itself remained the same. There was also a matching available.

There's some red marker writing on the top of the sofa, as shown in the photos, but this won't show once you add a cushion on top.

The back is marked "1977 Fisher-Price Toys."

Please note that the furniture pieces made for the Doll House #250 are slightly smaller than the later Fisher-Price dollhouses, so the pieces are not compatible.

Measurements:

Height: 1 in. (2.5 cm)

Length: 4 1/2 in. (11.4 cm)

Width: 2 in. (5.1 cm)