This small box of seals was produced by Whitney during the 1920s. The market leader for such boxed seals was Dennison by a wide margin, followed by Gibson and their simpler yet somewhat quirkier designs. Whitney was definitely out of their element in making these sets. The art is flat and uninteresting. They rarely marked these boxes, whether out of shame or expediency I cannot say. Dennison boxed sets were produced in relatively high numbers and had a national distribution. Gibson less so and Whitney even less so. Although hard to find, especially complete, these typically change hands for around $100 per box, so the buyer paid a premium here.
Mark B. Ledenbach's vintage Halloween collectibles blog.