Allied Doll and Toy Corporation  Quintuplets Set
The girls  are dressed in four pink flannel blankets with blue shell edging and tied with a blue ribbon and holding blue topped bottle. The boy is dressed just the opposite in a blue flannel blanket with pink shell edging and a pink bow and a pink tipped bottle. The dolls are dolls are 8" long with hard plastic bodies joined at the neck, arms and legs.  The heads are vinyl with molded painted hair, side glancing eyes and nurser mouth. 

The window box is covered in a white background paper with a pink and blue nursery print of baby buggies and animals.   The dolls originally were placed in an arched position in the box but the rubber bands that held them have deteriorated.

The set pictured below is the one I received for Christmas in 1963.