Hello, my brother gave me a Bob Kramer 10" chef 18 years ago on my 30th birthday- pre Zwilling, Henckels, etc. - he actually called and could speak to Bob on the phone back then. I emailed Kramer Knives recently and they found the record of the purchase on their books. I am having them recondition/service it as it was with my ex-wife for a few years and she used like any other knife in the drawer. They will send it back with an authenticity certificate. Anyone have any idea of what the knife's value might be? Thanks for any input. Alan