These were included with a lot of vintage jewelry I purchased.  I have no idea of age.  They measure approx. 7/8" in diameter.  Please see pictures for best description.  One of them has a chip on the back, not visible from the front.

I have an extensive inventory of vintage jewelry and am happy to combine shipping! Additional items shipped in the same package will ship for FREE.  Please DON'T PAY until I have had the chance to send you a combined invoice.  Meanwhile disregard the automated payment reminders from ebay and let me know when you are ready to check out.  There is no time limit :)  

I have an easy, no questions asked, hassle free return policy.  If you are unhappy with your purchase simply send me a message or follow the prompts to return the item.