"All Matching" to me means that all serial numbers applied at the factory are still present and correct. Doesn't matter if it's a Lee, Mauser, or Carcano. If you don't know which serial numbers were applied at the factory, then claiming all matching is, to be frank, lying. I have a No4 Mk II, for that rifle, all matching means that the action, the bolt, all of the wood, the magazine and the bayonet match. Less than that is not "All Matching".