This partial set of place cards was produced by Hallmark during the later 1920s. (The H within a circle is the mark Hallmark used at that time.) Hallmark undoubtedly used the imagery under license from Nash, as this imagery was first used by them as part of their postcard line. (I don’t have my postcard reference with me just now, so I am citing Nash from what may be a faulty memory!) These Hallmark place cards are fairly common. The child in the spotted costume may be the hardest to find of the four shown. The seller is asking $300 for them. I feel an achievable total would be $70-85.
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Mark B. Ledenbach's vintage Halloween collectibles blog.