any ideas?... small wire-made rings... gauges? CW?

[mdmike]

someone told me many years ago that these were Rev or CW bullet ring gauges? Round ball gauges? One is ~5/8" and the other is ~7/8". Any ideas or comments to that assessment?

 

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[Kray Gelder]

Curtain rings?

 

[ANTIQUARIAN]

Curtain rings?

This was my first thought as well Kray, but they almost seem too small to be curtain rings?
Dave

 

[CCDAMEEK]

Finger ring sizing guides/guages.