you have two cast iron 'spirit of '76' classics there harry.   yes you have it right: hull 258 (dated 08, 1976) and hull 242 (dated 04, 1976)   how did you end up with two?  those 17s are in high demand at the moment.     dave scobie M15 #288 - SCRED visit Scred's www-site: http://www.frewebs.com/m15-named-scred --- On Sat, 12/20/08, Harry Rowe <hgro@alltel.net> wrote: I have two M17's with the following hull numbers: MMP172580876 & MMP172420476. Are the three digits 258 & 242 the actual hull numbers? Regards, Harry Rowe