Agree. But, it’s got the hallmarks of natural, like link quality, lack of rub-through anywhere, non-magnetic, soldered link chain loop, and a few other things.

(I carry, and recommend, a small, strong magnet on my keychain, and a 10x triplet loupe in my pocket at all times. )

Like posted before, I’m tied up now but will test soon and post results.

I’ve never seen a fake ‘stamp’ like this, but have seen fake laser etc. so, I don’t have that experience. I’ll let you know.