I think Nick has nailed the dating side (I understand the FX / RWS link-up was owing to a . business failure, or hick-up, leaving FX with a lot of unsold stock - although not actually 'stocks' )

A very elegant gun is the Rapier, and the 2-shot sliding mag system works very well. It should have a Turkish Red Walnut stock (V rare!).

I paid £280.00 for my Excalibre ten years ago.