7x57 H/S?

I just got a few 7mm Mauser rounds, all GMCS, brass case and primer, faint ring crimp, reddish annulus. The rounds all have “7” at 12:00 and either “61” or “63” at 6:00. I’m pretty sure they are Dominican. Can anyone confirm?

Does anyone have this H/S style in 7x57? I have seen a similar one on .50 cal., which is why I tentatively ID mine as Dominican Rep.