M1 Garand Stock Stampings

[wsfbernie]

Help! I used Google to research, but no clear answers. EBAY item 332075076486. This stock has a four digit
number stamped on the LEFT butt and under the barrel channel. Is this stock a Danish or Greek return?
Or are these actually US military rack numbers? I have a NFR serialled M1 rifle but would like to get the right
stock with a good cartouche on it. My rifle chamber is white and the sight is lockbar, but I am confused by this
offered stock. What do you guys think?

[miuwcm3]

Just some units armory rack numbering system.
I have only also, not same numbers of course, stamps are deep, and painted in red.

[gwp]

The dents in front of the trigger housing opening and the numbers make me think it was from a Navy ship. The dents were probably from the rifle bouncing around in an armory rack. Maybe on USS Windham Bay (CVE-92).