I have sold hundreds of hand made, customized & engraved factory knives over the past 30 years. Early on I used etching with my name on the blade - I engraved 100% of my handmade knives – On some of my early handmade knives I etched my name on the blade but I had a stamp made early on “HUDSON” which was stamped on the tang. Knives that I just engraved I engraved a small th on one of the pal side bolsters – I also put a small th on the guns I have engraved – sometimes you have to look to find it but it’s there - That’s my story – tom