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The Mandel-ette of the Chicago Ferrotype Company may have been one of the reasons why the ferrotype process remained popular even in the early 20th century. The camera could be loaded with special tintype postcards in daylight, and after exposure the card only had to be transferred into the development tank attached to the camera where the photo was finished within one minute. That was as fast as Dr. Land's Polaroid process (invented much later). Costs for one 2½×3½ inch photo were just ca. 1½ cents (US). It was delivered in an outfit with 16 postcards which cost $5. "Outfit No. 2" included a tripod and material for 116 postcards, and cost $7.75.