I sent a note to WB on their website and here is what I got back:
Hi Jeff!
We haven’t made that lock of several years. I’ve been here 25 years. We get a lot of request for keys for all the old locks and we don’t even have any of them either. I’ve collected WB padlocks since I was hired and I have been lucky and found keys to work some of my locks. Your lock is a pin tumbler like we make today but it is double bolt locking which is something we don’t do anymore. We have a double ball padlock.
Check out the old WB catalogs on our website and maybe you’ll more information when we manufactured that style of padlock.
Sorry, I didn’t have more information.
Enjoy!
Steve Kirk
Wilson Bohannan Co.