I just went and checked the knife. The box says it is a 6318CV, and list it as STOCKMAN AMBER. There is a date of 04/01/2010 on the box, with Item No as 00039. The wharncliffe/sheepsfoot blade is stamped 6318 with USA on the top, and CV on the bottom. It does have the spey blade and it is marked CV. The main blade is, I think, a Turkish clip. The bolsters are rounded, not squared.
I like Case knives, but I don't know about the numbers.