I would think a spare set of drop locks would be the ultimate accessory for a WR cased gun. I am even sure more than one was ordered with it. It just makes sense to do so if you are going to a remote location like Africa or India where gunsmiths of any kind might be hundreds of miles away. Not fun to be out on the hunt with a double which only fires on one barrel. One failure away from throwing stones at nasty things that want to eat you or stomp you into pudding.
The problem is finding a gun that they would fit. It is a hundred or a thousand to one shot perhaps, or maybe less. Have you thought about dropping WR an email with good photos attached to see if they can give you some help. They might be able to narrow down a period that they were made or even give you a range of serial numbers that might be a close match. Now I am sure that they will require extensive fitting if I owned them and tried to fit them to a gun. But perhaps they could identify, by a serial number on the lock, which gun they came from. Their records might be your only clue, if any, and that gun might still be a "known" gun. It would be cool to get them all the way back to the gun they were made for.
