Before you are two British guns of similar dimensions and condition.

Let's say you're looking at two Purdeys...one in original condition and the second with Briley or Teague choke tubes added quite recently.

Given their similarities, is there a difference in value?

Put another way, what penalty does the market place on the altered (tubed) gun? Negative 15 percent...or 20 percent? Or no penalty at all?

Second question:

Does the market distinguish between Briley and Teague (the gun carrying them presumably would have been sent back to the proof house...and the Briley probably not)?

Please, no lectures about the utility of choke tubes...I already agree with you!

This is simply a question about market values.

What do you think?