This is a very desirable invitation from 1924 made by an unknown manufacturer, although there is a possibility it was Whitney. Know that it is NOT complete. The cat deputy should be holding a folded piece of paper with "A HALLOWEEN SUBPOENA" printed on the front along with a black seal. Unfolded, there are indicated lines for "place," "date," and "hour." I feel that very few of these exist with its original subpoena.
Mark B. Ledenbach's vintage Halloween collectibles blog.