Cap is spot on when he says the best assessment wil only come from a hands on inspection.

I have a few model 12s of various lengths but only one of them has a sheath like this. Definitely a Moore sheath which is on the plus side for value...definitely used condition and I'd ball park it at 45-5500.

Your friend is welcome to think anything he wants about price but I think he'll sit on it a long time asking 7K.

I learned many years ago that the value of anything is what YOU can get for it on the day YOU want to sell it. Doesn't matter a hoot what anyone else tells you.

Tough knife to find...