That "conversion" is so very unfortunate. The rifle looks like it had been in great shape. It is different (to me) if the rifle is in poor condition.

I have seen several rook rifles that have been modifieed. In fact, I have a Holland that had been a 360 rook and is now a 22LR. It wasn't that expensive so I bought it solely as a shooter.

The same butchery happens to other vintage rifles. I remember seeing a very nice double rifle that some idiot proudly had ported.

Well having money doesn't mean having good taste.