would you think it is sandblasted or wirebrushed recently in the collectible trade or during service/re-furb? It is pretty obvious some layers have been removed, as the Steyr 1886 mark is partilly faint. On the other hand, I find it strange there is no edge-effect after sanding: I'd image if you sand the blade, the crossguard would protect the bottom of the blade so that there would be more thickness in that area