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This web page features photos of gun locks that are stamped with the name of the 1800s Whitmore, Wolff, Duff & Co. hardware company of Pittsburgh, Pennsylvania. Click here for information on the history of the company, which went by several different names over the years as the members of the partnership changed.
L. Dietle
The following picture show a "WHITMORE WOLFF DUFF & Co PITTSBURGH" branding stamp on a back action lock.
The following two pictures show a "WHITMORE WOLFF DUFF & Co PITTSBURGH PA" branding stamp on a different back action lock.
The following picture shows the "WHITMORE WOLFF DUFF & CO PITTSBURGH" branding stamp on a front action percussion lock.
