I have found donor hammers off eBay. Best is to get a set of take off pairs. You can find new ones which have no hole for
The tumbler axle bored and require a lot of fitting. As you may know they have a square taper hole not a straight hole. At least the ones I have fit. There was a square tapered anvil that was used to finish the square taper. And I’ve only heard about them and do not have one to loan. I have thought about buying hammers and locks from Holts but know I’d mostly collect more junk and never use them. Good luck in you quest. Do you know what sizes you need? I have about 30 to look over to see if there is a decent match.
