Years ago I won a Camillus guard marked USMC MARK 2 knife with a care tag. The description was pretty vague.
"Vintage Camillus Kbar USMS type knife, still has instruction book attached"
When I opened it up I found it had two care tags. I guess they put two on it at the factory by mistake. You can see the knife handle imprint on the care tag that was on top.