S&H Green Stamps were trading stamps popular in the United States from the 1930s until the late 1980s. They were distributed as part of a rewards program operated by Sperry & Hutchinson. This sign, like our Woolworth and Rexall Signs, has an additional set of contacts on the back for flush mounting the sign to the front or side of a building. #44-2052, Sm. S&H Green Stamps Sign .550” tall x 3.0” wide, Suitable for HO/N scales