Well this didn’t take as long as I expected. I got a reply from a collector on another site, so I’ll pass it along, Here goes, J.S.H. & Co was a hardware company. The letters stood for “Janney, Semple, Hill & Company” They were in business under this name from 1898-1960 when they went out of business. They were the largest wholesale hardware company in the northwestern US . This is one of the reasons I love collecting padlocks, especially hardware company locks, I like finding out the history on the company’s they represent. Mark