Some mechanicals have wheels that change the faces on a body or dates on a calendar. Mail Auction A process of selling postcards through the mail by dealers or collectors. These may be privately printed auctions or ones that appear in the trade papers, such as Barr's Postcard News or The Postcard Collector. All bidding must be completed by the closing date. Each auction house has rules, which must be understood before bidding.
Mail Order See approval service .
Miniature A postcard done as a novelty during the Golden Age . They have stamp boxes and are often postally used. The most desirable are those by the Scandinavian artist or publisher John Winsch. Top N Net Price Sale Sales usually conducted by mail or in the trade publications. Fixed prices are published for each item listed.