These are bottoms for the small-sized Spook Lamps, early table decorations and lanterns. The smaller ones could also be used in conjunction with place cards. (You can see the factory made openings on one of the four panels per bottom.) Unfortunately, what is being offered for auction are remnants. Missing are the top sections containing the candle holder and the four support struts for each lantern that would attach to each bottom. Complete Spook Lamps are hard to find, as they were fragile to begin with. Most have not made the journey through over a century of time well or at all.
Mark B. Ledenbach's vintage Halloween collectibles blog.