... see if you can decide if the letter should be an "R" first,.... if Holt did work on the gun,.. it looks like he only did repairs and kept the old stock with Unicoi hardware and profile,.... my old eyes sometimes fool me, but in the third photo down of the second series there appears to be something where the lock bolt would normally be,...
... we shall follow this puzzle,.... post more pix close up when she gets to her new home,..... Regards,... CCF,....