I just got this Chicago City Police M66 short rifle at auction it was sold as a "Springfield 2nd Model Allin Trapdoor Conversion of 1866". Its is a Bannerman conversion as it has a filled in middle barrel spring and the cleaning rod is not threaded. It is Marked C.C.P. and C.A. for Chicago City Police and Citizens Association. It also has a number 235 in the stock which is in the correct range of 296 guns given to the police by the citizens association as described in "History of the Chicago Police" by John Flinn 1887.
I would really like to find more information on these. The only thing I have found is an article by Bruce Green in Trapdoor News from 8/12. Are there any more publications on these guns? Can someone tell me the approximate value of this Trapdoor? Any info would help!!
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