Chinese solid? silver ring

[Pandemic]

Just trying to get information about this ring. It was passed down to me from my Grandfather. He got it while he was in the military, over seas, in the 50's.

https://imgur.com/a/UAgDi5j

<blockquote class="imgur-embed-pub" lang="en" data-id="a/UAgDi5j" data-context="false" ><a href="//imgur.com/a/UAgDi5j"></a></blockquote><script async src="//s.imgur.com/min/embed.js" charset="utf-8"></script>

[dognose]

Hi,

Welcome to the Forum.

Please embed your images.

Trev.

[Pandemic]

[Pandemic]

Tried getting better photos of the stamp:

[Ag999]

The lowermost double character in your photos appears to be the "jungin" mark 銀 which means silver.
I'm not sure whether your ring is Chinese or Japanese.