1903 stock stamp

Anyone have any information on this stamp ?Attachment 47116

Not seeing it here on the 'Inspectors' page, but rummage around.
https://m1903.com/

from here

https://proofhouse.com/cm/us_inspector.htm

SPL Unknown M1903 Riples 1917-1920

I'm not seeing it on the list. Maybe someone can look it up in Brophy's, mines at home.

Thanks for checking, the list has SPG wrong it should be Stanley S.P. Gibbs who was a civilian emplyee
at Springfield from 1916 to 1951

I could not find it in Brophy either !

A few years ago I did find L.L.T. which was a pre WW2 inspector on rebuilds (1903)

Here is a reference to "SPL" marked stock on a NM:
"SA 1036724 SA 11-18 Mk I Black park, barrel breech face and receiver bolt hole in the white, Mark 1 stock "SPL"
Source: http://www.vishooter.net/SA.txt
And another reference:
"SPL Unknown M1903 Riples 1917-1920"
Source: https://gunhub.com/m1-garand/9806-he...artouches.html
Makes for a good mystery, no?

The only reference I have seen to S.P.L. was on a 1.08 million range Springfield.

Thanks for the help as it pin points the period of use

RCS