Mark B. Ledenbach's vintage Halloween collectibles blog.

Vintage Dennisons Halloween Seals and Boxes

The seller placed too low of a BIN price on these great Dennison boxed items. Although apparently incomplete (the listing's verbiage is unclear...), being able to obtain these nice slide boxes for ~$25 with shipping is a solid bargain. 
Dennison really cornered the market starting in the teens and extending through the early 1930s with their imaginative assortment of boxed seals, cut-outs, illuminated silhouettes and the like. These boxed goods are among my favorite of all vintage Halloween genres. Gibson threw their hat in the ring and came up with compelling designs from time to time. These are harder to find, having been made in much smaller quantities than the quantities having been pumped out by the Dennison juggernaut. Whitney, too, tried to join the party, but their output was curiously devoid of memorable designs. I say curiously as they were a prolific producer of interesting postcard designs. Whitney's management must not have believed in the staying power of small items with which to decorate envelopes, invitations, etc.