Stickman-Take a look at Walt's book on page 271. Thats one that went to W.F. Is your ser. # only 3 numbers or are you leaving out the last 3 digits? May be a bit of confusion on that spelling of Ithica because it is spelled Ithaca. If in fact it is spelled Ithica it might just be the only one! Is your guns W F & Co stamping followed by a number ? Are the barrels steel or twist ? Ithaca's are interesting!