I decided to start a thread with codes for older or non-cataloged rifles.
Very simple rules.
1. It can't be a current catalog item.
2. It has to be in your possession right now.
Describe what it is and how you got it.

I'm starting us out with these 2.
12FV-S 204 Ruger
This is a Single Shot Model 12 Blued in a factory synthetic stock. I bought it from Jim at NSS a few years ago through an ad he posted here.

16BSS 300 WSM
This one is a Laminate stock 16. It was a find at my LGS a bit after the Accu-Trigger was released this older flat rear was languishing there and needed me to save it.