Help with pattern?

[Kenrab]

I picked up a rough black KA-BAR jack in Arkansas and need any info on it. 3 -1/4 -3-3/8" clip main stamped KA-BAR , secondary pen stamped Union Cutlery, Olean NY. In rough black. Any help greatly appreciated.

[btrwtr]

Not sure what the official pattern number from KA-Bar would be but I would call this a sowbelly jack knife. Handles aren't what I would call rough black but rather jigged black composition handles. Rough black will normally have a more erratic texture.

[Ridgegrass]

I agree on the handles..J.O'.

[Whitneyrifle]

If it has the Union Cut Co stamp, than it is pre-1945 ish. That stamp mark stoped after the mid-40s. The scales are most likely bone. As for pattern, not sure, kinda like a sow belly or a serpentine jack.

[Ridgegrass]

Do a hot needle test on the handles. Won't hurt that knife. I'm curious. J.O'.