USGI,
That band is just like a repro I bought and rigged up a sling on my little crippled buddies grandsons shotgun (I believe it was a 28gage)
Had bought it from Walter as a repro from carbinepartsdotnet. Exact same style with the screw and lack of welded lug on the other side.

Deldriver:
If your not looking for a particular HG, you'll have to wade thru them.
I have quite a few here with ~1/4 described as unmarked. Upon Closer look, many of the ones described as being unmarked revealed the tiny TN mark, some partial stamped RSG and W (WRA) marks.

FWIW,
Charlie-Painter777