Originally Posted By: eightbore
As has been suggested, stamps not put there by the makers at the time of manufacture can only detract from the value of the gun.


Not really. British guns of this age are routinely reproved as a matter of course. Many British makers recommend it for the older guns, even those that have not been altered and don't appear to be out of proof.

Sure, alterations usually reduce price, and lengthening the chambers did this Purdey no favours. However, a simple, precautionary reproof of an unaltered pre-WWI gun does not.

"Serious rifles have two barrels, everything else just burns gunpowder."