DOCTOR OF DENTISTRY Dental Caduceus GOLD KEY Fraternity? UNUSUAL PIECE Help ID?

Description

Excellent condition.  Truly.....please message me if you recognize this and have any info.  The classic dental caduceus symbol.  Key shaped, but looks like a blank or not-usable.  Marked "4" on back.  1-7/8" wide.
THANK YOU EBAY!!!     We are so thankful for our customers!    We have thousands of listings, and therefore receive hundreds of messages, every single day.  So, if you are asking about a price drop, or a shipping price drop, or asking for extra measurements, or to add additional photos, please allow me to say, no thanks.  If your question is not one of those questions, we will be happy to answer you individually.
thanks.
YES....WE DO COMBINE SHIPPING!  Extra jewelry items ship for each.  We will refund the difference as we are mailing out.  Does not include large jewelry lots.
We encourage you to read the description and check all photos.