Prosch Manufacturing Co. (New York, NY)
Instantaneous Shutter - c.1884
The Photographic Times
and American Photographer, Vol.
14, No. 158 (New Series No. 38), February 1884, ads p.4
Anthony's Photographic Bulletin, Vol. 15, No. 11, E. & H.T.
Anthony & Co. (New York, NY), November 1884, ads p. 6
Notes:
This shutter would appear to be the earliest shutter made by Prosch..
References:
The Photographic Times and American Photographer,
Vol. 14, No. 158 (New Series No. 38), February 1884, ads p.4
