Help ID old ring dug today

[sandfisher1]

Dug this ring about 4 inches down.
VDI 23-24, Nickel on my White's TreasurePro.
Has a repair or was resized.
6 grams, but not sure how accurate my cheap scale is
24 mm across
6 mm thick
The number "10" stamped on the outside of the ring.
no other marks.
Looks like bronze to me.

Any idea on how old this might be or where to find out more about a ring like this.?
Different than other rings I have dug.

Thank you for any help,
sandfisher1

 

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[Charlie P. (NY)]

If it is 19.8mm across inside it is a ring size gauge.

 

[sandfisher1]

If it is 19.8mm across inside it is a ring size gauge.

24 mm across

sandfisher1