John that is an interesting observation. Flayderman doesn't question the production figure in his 8th edition but does set it at 520. He indicates that the four shot model was delivered under contract.
On the subject of research materials do you know if there is a similar documentation of issues of arms and accoutrements to the Regular Army? If so do you have its National Archives citation? I'd be very interested to find issues in the 1830-1860 period.
Thanks for any help,
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