Although I don't remember having seen it mentioned in any of the reports it is one of the Providence, RI Committee of Safety muskets...marked on the butt plate "Prov" and a number. At least 3 are believed to have survived, Nos. 51, 53 and 83. I've no idea where the other two are...two of these belonged to the late Charles Cook, a Providence lawyer that was collecting long before WWII.