Sun May 10, 2020 6:13 am by MartinHewitt
Thanks, femuart!
I would like to date my friction fence Moslers as far as possible. Both of them have a dial like that attached. The attached dial is for the Mosler 11, which has a safe opening index at the top and a case opening index at the bottom. There isn't much about Mosler online. They moved to Hamilton in 1891, so my locks must have been made after 1891. Duh! And they stayed there until 2001, so they must be made before 2001. Duh! The last patent for the Mosler Bank Safe Co. which I found was 1892, the first for Mosler Safe Co. was 1919, last 1974 with no patent afterwards. Not much of an improvement as it actually narrows it down only to 1892-2001. If we take into account the date of the friction fence patent from Yale it is 1906-2001. Moslers copy of S&G's current vault lock line started in 1968. That could be seen as an end-date, but it is not a replacement of the Mosler 11 due to the size. Let's say my 11 was not a later replacement, then we have 1892-1968. That is about what I have as data.
From my feeling about the design of the dial my guess is 1920s - 1940s for both locks.
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