Not a wax stamp. It would be a reverse “D” if it were. Likely a collar stud. Popular at the turn of the 20th century.I think it's the letter " D ". Possibly made out of copper or brass. Could it be a wax seal stamp?
"Sometimes down is up, sometimes up is down." Alice in WonderlandNot a wax stamp. It would be a reverse “D” if it were.
That's what we do here. We get it right. Agree. Wax seal."Sometimes down is up, sometimes up is down." Alice in Wonderland
Wax seal.