Unusual Stock Marking

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?

https://www.milsurps.com/images/impo.../3130xvd-1.jpg

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.

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