Derval
Revision as of 21:55, 4 January 2011 by U. kulick (talk | contribs) (Created page with "{{stub}} The '''Derval''' was a 2-leaf shutter with 3 speeds plus B and T mode. Category:German shutters Category:leaf shutters Category:1906-1910")
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The Derval was a 2-leaf shutter with 3 speeds plus B and T mode.
