Super tiny cameo earstuds

I found these super tiny caleo and silver earstuds at a flea market yesterday. They cost me 1€, so I was happy with my catch.
Upon further inspection it looks like one of the girls misses a piece of her nose? But its almost unnoticable.
Metal tested as silver, but it has no stamps.
I m a cameo newbie, so can anyone give some more info on them? They could becshell cameo, but for all I care could also be plastic. Too tiny to see. How old would these be?
Still like them, hope you like them too!