You're correct Joe. There were C-71 and C-72 saws in addition to the C-7. Total C-series lineup was C-5/7/9, C-51/71/91, C-52/72 (plus the few "G" models that were sold with the planetary geardrive clutch cover). The C-51/71/91 saws mostly had the overrunning bearing starter, as did some early C-52/72 saws. The late production C-72's had the pawl type starter setup (the best type). C-72's were built long after all the C-series saws had been discontinued. IIRC they were built until 1982 or so. Saw an NOS late production C-72 (with box) go for over $500 on feebay a few years ago...
There were no C-92's, as the 'big dog' slot in that lineup was filled by the XP1000 and later the XP1020. An interesting side note (well interesting to me anyway)................the late C-91's (serial number 1854403 and later according to the IPL) had the single flat reed manifold as used on the C-5/51/52 and C-7/71/72 saws rather than the four petal pyramid reed setup previously used on the C-9/91 saws. My theory is that this was during the time of the release of the 100cc XP1000 (XP standing for "Extra Power"....), and Homelite wanted there to be more of a "performance gap" between their new big dog and the outgoing 85.5cc C-91 (to justify the price increase). They must've had too many C-91 cylinders and other parts left over for them to just drop the model entirely at that point. Better to use up those remaing parts by assembling them as saws with the flat reed manifolds than letting them collect dust. I've seen one of these late C-91's, and I know a member here who has one too.
Saw that a day or two ago. Looks like a Honda starter to me as well...........................and looks goofy as hell. I threw a token bid on that saw to keep track of if (without wasting a 'watch list' slot). It'll be interesting to see what it goes for. I'm sure there will be more bidding on it now that it's been "exposed" here........despite the hack homebrew starter cover...:jester: