Any one recognize this one?

[Sandog]

Definitely not a coin. Might have had attachment pins projecting from the back.

 

[Limitool]

Here ya go.... The St. Benedict medal is believed to be a very powerful medal, as it declares the wearer's trust in God's authority over evil and His ability to protect His ...

Meaning of the Benedictine Medal — Sisters of St. Benedict

The front of the Jubilee Medal of Saint Benedict is stamped with a cross on which is superimposed the letters CSSML on the upright beam and NDSMD in the cross beam.

smmsisters.org

 

[Sandog]

Right on! Thanks. Added on the word "pin" to the search and found this one.