I have a Flyer on my USAAF bike and the leather is hard as new even after a few hundred miles. There are a couple small dents from my bony behind, but it doesn't seem any softer.
There's a guy in the US somewhere who's licensed by Brooks to repair saddles, but I would be surprised if a recover would be cheap enough to bother. I have done a frame swap (B68 to B67 because B67s have been discontinued) and that wasn't too bad. Stretching the leather back was a little bit of a chore even with the "aged", but manageable using some screwdrivers to pull it back and hold it. I replaced the rivets with allen bolts.
From the left frame to the right (I also dyed and painted it).
There's a guy in the US somewhere who's licensed by Brooks to repair saddles, but I would be surprised if a recover would be cheap enough to bother. I have done a frame swap (B68 to B67 because B67s have been discontinued) and that wasn't too bad. Stretching the leather back was a little bit of a chore even with the "aged", but manageable using some screwdrivers to pull it back and hold it. I replaced the rivets with allen bolts.
From the left frame to the right (I also dyed and painted it).
