Hello, guys!
Here s another two skull rings, but I think it’s a both fake. But have some doubts. For the first ring it’s very strange condition. Shine silver spots, casting spots or corrosion of the low grade silver(?)
Second ring looks like cast piece.

Second ring

Found worn example of the second ring from other forum
Its pretty close to the second ring

poor photos of 1st ring. Looks like its been hit with artificial ageing..

2nd ring, poor photos too. IF your seeing cast faults its not good..... 'worn' ring looking good.....

Most dont know how hard it is to take a good photo of jewelry. .When they start they see quick. Getting good details,,the right lighting, background,, can be maddening!

Took second ring from seller.
It’s casted, yeah?
It’s look like stamp, but under magnifying glass it’s had a lot of caverns.
Also it had Danish content stamp(?)

Reverse looks good.. But I’m confused with this ring.
Also this type of content stamp(?) are really exist.

the stamp is a good known hallmark.... And,,the skull ring a known pattern. This is just more than likely a copy [cast] from a good example..

Thank U, Gaspare. Will return it to seller, he agreed to cancel a deal.