I have an opportunity to pick up a No. 1-B in 243 that is in virtually new condition. I'm aware that the non-prefix 243's are very rare, but this is a low 130 prefix from 1974. This has very nice wood, a 3-screw trigger, and most likely a Wilson barrel. Apparently 1974 was a high production year for No. 1's overall, but I can find any info on how many 243's were made. If anyone can shed some light on how rare this rifle might be I would appreciate it. Thanks!