http://www.allaboutpocketknives.com/content/knife-manufacturer-specific-research/case-knife-reference-guide/case-knife-pattern-name-reference-guide/case-xx-names-a-c/
Heinnie do have a Rough Rider Stockman for £11, which has got to be worth trying for that price: http://www.heinnie.com/rough-rider-old-yellow-large-stockman
Buck Stockman I would recommend either of these.Model# 301 is USA made 420HC steelModel# 371 would be China made 420J2 steelBlades Modified Clip: 2 ¾" Spey: 2" Sheepsfoot: 2." Both great quality and lifetime warranty.