DGJ Winter 2018 p.129 , in John Campbell II’s article on Needham there is a picture of an 1884 advertisement.

It offers Keepers Guns with Cylinder bores at £6.

With barrels choked “10/6d per barrel extra”.

It would appear that in the early days of choke some gunmakers did not consider that they should throw in choke boring as part of the basic price, and indeed some customers did not want to pay half a Guinea extra to increase their chances of missing a bird at 20 to 30 yards.