In John Houchins new book LC Smith The Legend Lives. On page 522 the records show that they are missing for SN 70000-78999.On the following page hammer guns 79000-84943 dates manufacture at 1900. I am sure someone else will help with info also. But, if you could find room in that display case for Johns' book it would make a beautiful addition to it. Your great grandfather had great taste in guns. I would love to see a picture of the display when finished. Good Luck.