For instance, he isn't clear on where Evans boxlocks stand versus sidelocks.
The differences among boxlocks and sidelocks are covered in the market valuation Original Quality grade. Sidelock ejectors go from OQ1 (best work, but not extra finish best work) to OQ2 ("A" grade) to OQ3 ("B" grade) to OQ4 ("C" grade - a rather Spartan model). Sidelock non-ejectors get a one grade ding. Boxlocks pick up at OQ5 as a "best work" gun, OQ6 as a "second grade", OQ7 as a third grade", and OQ8 as a "colonial or farmer grade." Boxlock non-ejectors get a one grade ding, also (a colonial grade BLNE is OQ9, as low as it gets).
The Evans name is settled at Brand Value level two, as opposed to BV1 and BV3. We to have consensus it is an Evans and a high grade gun, but not a best work BLE; therefore OQ5 1/2. That leaves only Current Condition level. I thought CC3 "Significant use" as opposed to CC4 "Heavy use but no abuse" or CC2 "slight use." If we would raise the condition to CC2, the valuation is BV2-OQ5 1/2-CC2 = $5,500; I think that is too much. I could see CC2 1/2; BV2-OQ5 1/2-CC2 1/2 = $4,750. A similar gun in sidelock ejector would be BV2-OQ2 1/2-CC2 1/2n = $11,000.
The poster's boxlock has the nicest engraving I have ever seen on an Evans, but, somehow, Don Amos came up with a pretty fair selling price for an Evans boxlock. He may have erred on condition because some Evans guns are real light on case colors, even the day they leave the factory. The oil at the butt, and lack of blue on the trigger guard and heel and toe plates probably swayed Don's estimate to the low side.
Does the above discussion answer some questions? More questions?
DDA