A replacement die would not constitute a 'replacement' (?) or restrike badge. Manufacturers often replaced dies as they wore-out or were damaged in the presses and I would see little point in marking a die simply because it replaced a previous one. Of course, there is the possibility that the entire badge is a restrike, done by someone with access to a good, sharp die and a Smith and Wright slider punch - stamping a big 'R' to show it was a restrike - but I doubt that. Has anyone else on the Forum got an anodised aluminium badge with a mark to the reverse ? Surely this can't bed the only one in existence. Regards. David