I was unaware that (2) was an assumption? I thought Al had fully documented that usage - that the starred trapdoors definitely were those guns assembled "off the books" for sale/gift to State militia, etc., and were fabricated from the turned-in guns of 1879, with new receivers, barrels and stocks.
I respectfully disagree with Tony's contention - and - I believe that attempting to cover ALL uses of the "star/turtle" under one umbrella is equally fallacious, especially where lumping in "onesies" located anywhere on the arm. AFAIK the star - as it relates to TDs - was a very consistent practice with but one application. I've been told that the s/n suffix star occurs in more than one form, but I've not seen any other than the one shown in this thread.
At the very least, I think we have perhaps three distinct cases (1) The starred arms of 1881/82 (2) The "turtle" accuracy mark, and (3) EVERYTHING else, including sundry red herrings and rabbit holes. My left-hand-rifled carbine (numbered during the "star" period) has a (different) star on the INside of the lock plate - do we include that? I don't think so.
Just my $.02, YMMV
