These two shades are the first iterations of shades produced by Beistle as early as 1918 as part of their first party sets. The sets produced prior to 1923 were made in smaller quantities, hence pieces from these sets, especially these large shades, surface far less often than pieces from the 1923 fairy-themed sets produced in booklet, boxed and enveloped forms in near-shocking quantities.
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Mark B. Ledenbach's vintage Halloween collectibles blog.