*Click photo to enlarge*
This is a USS Olympia UIM
USS Olympia SSN-717 Unit Identification Marker
**NOTE: The first letter "U" has red on it.  Not sure if that's thread or ink or something***
It measures approx. 4 3/4" across
There may be a spot of dried glue on the back from where it was attached to an index card in a collection
Domestic shipping is via 1st class mail stamped envelope.