I had forgotten all about this...it's great getting old and somewhat forgetful, I'm always finding new things. I believe it is an RPM-002, D/D North FS-502
Nice find! You're singing my song. I've also found things in my collection I didn't know I had. My greatest fear, having something rare or significant in my collect and not know it. I found this recently. https://www.cointalk.com/threads/1939-s-washington-quarter-ddo.355287/