The 1938 Univex Mercury was an unusual half frame 35 mm camera from The Universal Camera Corporation.
It was the first camera with any kind of hot shoe connector,"Univex Mercury: The American Way" and had a distinctive profile due to a large dome protruding from the top of the main body to accommodate its 1/1000 sec rotary disc shutter.S. F. Spira with Eaton S. Lothrop, Jr and Jonathan R. Spira. The History of Photography as Seen Through the Spira Collection. New York, NY: Aperture, 2001 . pp 154, 159-160. It used Universal #200 film, which was only made prior to WWII.
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