The tight-stitched Johnson sheath is screaming early-mid 1980's...as is the lined butt cap. Problem is: I cannot remember when the shop started offering the knurled handle??
Nice knife, Capt. Chris
PS: Floyd Byrd was doing all of the shop's outsourcing at this time period. I remember the knurling started early enough (Pretty sure) to be in line with my dates...Hope this helps, Capt. Chris