1903 with Sedgely USMC 9-41 barrel
The stock is without any sign of a P firing proof or a cartouche, behind the rear trigger guard is a small number 56 (not a rack number) and in the cut-off recess is a small o stamp.
sometime ago I sent this s/n to Frank Mallory and received a letter back stating that the serial number was among other known USMC rifles and there was a good chance that this was also a USMC rifle - but still no "hit".
The bore is like new and the rifle is not rusted - old cosmolene
"0" stamp in cut off recess
There are a number of SA stocks with the 0 stamp in the recess such as: CCV no-bolt stock, DAL stocks and SA SPG stocks