What a wonderful legacy! This should make for a Merry Christmas You can find information about your Ideal grade here http://www.lcsmith.org/shotguns/1913grades.html Infro about finding the serial number and date of manufacture here http://members.boardhost.com/lcsmith/msg/1165631289.html Your gun is probably well past due a check and clean so let us know what part of the country you're from and we could recomend some double gun specialist smiths.