TISCO stands for the foundry that cast your safe for Diebold.
Taylor-Wharton Iron and Steel Company
in business 1742 to today with their foundry closing in 1971 based on what this article writes
https://www.nj.com/hunterdon/2017/09/ce ... n_and.htmlThis blog mentions TISCO making the metal for a Diebold safe in 1921, so you can at least start to form a list of years they made castings for them:
https://princetonhistory.com/2021/03/30 ... er-street/https://princetonhistory.com/2021/03/30/527-west-water-street/ wrote:Princeton Republic, June 16, 1921 – “The Princeton State Bank recently installed a burglar proof safe which they procured from the Diebold Safe & Lock Co. of Dayton, Ohio. The safe is of the very latest design and the mechanism is operated by three clocks in the door. The steel of which the body is made is the celebrated Tisco Manganese steel and known as the hardest and strongest steel on the market. … The body of the safe is one solid casting and the door is also one solid casting and is ground into a jam with alundum and oil so as to make it absolutely liquid tight and proof against nitroglycerine.”
There are a few groups on Facebook that may be able to get you a date of manufacture closer to the decade it was made, but I am not sure if Diebold serial numbers were ever made public. Some people keep their own lists over the years so they can at least give you a balllpark answer.
Here is one such group of safe collectors:
https://www.facebook.com/groups/353624073336034paint job came out really nice!
Squelchtone