Vintage, estimated 1950s, plan-a-home home design kit. They made kits back in the 1940's so could be that age but not sure. This is a RARE item. Build / construct your interior layout in 3d using provided paper punch outs. One owner model kit, some items have been punched out. All paper cutouts have been counted and are present. Pink strips have been counted. 10 - 4", 9 - 5", 9 - 4", 9 - 3", 9 - 2.5", 8 - 1.5", 19 - 1". Looks like most items present. Nicely cared for. Box is 17 1/2" x 12 3/4"