Unusual Stock Marking

[SPEEDGUNNER]

I just found a picture of this marking on a Garand that is being auctioned on AA. I have an M-1A (Springfield Armory) stock that has the exact same marking, and I could never figure it out. Bad copy of DoD cartouche? Something else? Any ideas?? Thoughts? Comments?

Information

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[Bob Seijas]

Round DAS stamps are work-in-progress approvals, are meant to be sanded or machined off the finished part. The subject was covered in detail in the GCA Journal a few years ago.

[SPEEDGUNNER]

What issue of the GCA Journal, I will look it up. Thanks!!