Very rare! Vintage Sterling Silver 925 stamped NIKE ring. In perfect condition.

Vintage Nike sterling silver 925 stamped ring. It was my grandfathers. Not sure of size, if anybody knows how I can tell the size it would be much appreciated! I looked at a diagram and it looks to be around a size 8. In perfect shape. Extremely rare. I’ve never seen anything like it before! Anyone would look awesome wearing it, you would match when you tie your shoes, if you’re wearing Nike’s of course.😉