Professional Camera Manufacturing Co.
St. Louis, Missouri

Professional Model

5x7
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Date Introduced: - ; Years Manufactured: c. 1920
Construction: rear focus via rack and pinion (two gear tracks on top of base rails); single swing; reversing by removable back
Materials: white wood; cherry base; black fabric bellows; brass hardware
Sizes Offered: at least 5x7
Notes:  This is a simple, utilitarian (think cheap) camera, manufactured in St. Louis. 

References:
 

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