Mike - you are speaking of the Brand Value part of gun pricing, the part dependent on the brand of the gun. Brit guns are usually branded by the maker's name. Frequently, retailers had their name put on a trade made gun. For three guns of similar Original Quality grade with similar Current Condition level, BV1 = 1, BV2 = 0.75, and BV3 = 0.50. BV1 names are: Boss, H&H, Purdey, and Woodward. BV2 names are: Westley Richards, Dickson, Rigby, Beesley, Grant, Powell, Atkin, Churchill, Henry, Lancaster, Evans, Watson, Wilks, Greener, Boswell, Gibbs, and Lang. All other Brit names will fall into BV3. That is to say that a W & S built "Patent Top Screw Treble Grip Box Lock Hammerless With Automatic Trigger Safety" of A&W 51 grade (described as "Extra best quality and finish throughout") retailed by Army and Navy (and for sure A&N retailed such guns) would price at half what the same basic gun would if it carried the Woodward name or two thirds if it carried the Evans or Rigby name. W & S did make minor cosmedic changes to the guns to sorta keep some uniqueness among retailers.
The "A & W" series of guns came in 5 listed qualities and ranged in price from £21 to £50; ejectors and Whitworth barrels were each £8 extra. The "W&R" series, side-lock versions of the A&W's, priced at £19 to £54. The London Pattern Side-Lock Ejector, often billed as a best gun by modern day dealers, priced at £61. The Premier Hammerless Ejector, usually considered a best gun, priced at £82 and The Imperial Premier, usually considered an extra finish best gun, went for £112; £8 extra for Whitworth barrels on both.
