Crisco:

You ahve a mid 1940's hunter or skinner in a very nice Hesiser sheath. The knife from the photo at first glance looks to be a Model 4 (skinner) but does have some Model 3(hunter) characteristics.
Knife could be older than the sheath. Knife is worth maybe $1,500 or maybe more , who knows in todays market.I do not know what the other knife is.

Mike Webb
RKS #4107