The Evans numbers for 1907 and 1908 would run between roughly 8,100 to 9,500.

With regard to how complete it was, I'd have to see it to be sure, but all I've seen were actually finished by Webley. If you'll recall, I own an Evans that's the same model and caliber as yours. What you have is a readily identifiable Webley model, with Webley's serial number on the barrels. The way it was done in the trade in those days leaves two choices from there. Either Evans bought it in as a proven barreled action in the white, and stocked and finished it themselves, or they bought it in complete.

Specific to Evans, the general consensus in the trade is that Evans wasn't finishing any of these.

With respect to the many of these that Webley made for the trade, there is often a way to tell. A gun "bought in" as a barreled action in the white is not engraved. It requires many, many hours of bench time before it is ready to be engraved - much chisel and file work still needs to be done, after which it is stocked, and then polished. Only then is it ready for engraving, at which time it is almost complete. The engraving pattern tells the tale. The same border engraving pattern or full converage engraving pattern that appear on the boxlock DRs that Webley retailed themselves also appear on the same model rifles that were built complete for Evans, Army & Navy, Gibbs, Holland & Holland, Alex Henry, Lang (which was owned by the Webley brothers), London Sporting Park, Rigby, etc., ad nauseum. Of course, all of those will have Webley numbers on them. With the exception of a rifle or two bought in from Wilkes, I've never seen a pre-war boxlock Evans DR that didn't have a Webley engraving pattern on it.