Been in the Locksmith Biz since 1970.
I'm pretty much semi-retired but still keep a pretty steady flow of work moving.
One of my gigs is to buy locks on Ebay less key then produce a key & sell them back
at a profit.
Some of my methods are more refined than the the usual.
I also have a third generation 100+ year assortment of blanks.
Any tech help on old padlocks or blanks is more than welcome.
Has anyone ever rekeyed an antique mortise cylinder with square pins?
I have :>