BEAUTFIUL SET!! A large set just sold on feebay but it had some copper plated as well..It was not as large as yours, but stunning as well. Trying to get info on Shaw Leibowitz past custom/production runs is not easy from my experience.. I own 3 SL custom knives.. I have look for info about SL from Hibbens, and a few other season people in the community, but its hard info to find.. KNIFE WORLD in 2001 wrote a GREAT article on the history of Shaw and Leibowitz- about 5pages long..I have a copy if you need me to scan and email it i could.. Unfortunatly if wont help you find info about your set..

here are a few of mine