Hello, Frank. There is a local distributor here in Syracuse, for Mayhew Chisels. The local guy has been doing business with Mayhew for 30 years, and he has never seen these. I am going to stop by the store and look through some of his old paper catalogs, there is nothing about these chisels online from Mayhew. If that fails, I will try to contact Mayhew, chances are that anyone who would have been around when these were made, has probably retired!!!!! Thanks, Lou