Beautiful knife there buddy. I have a 110 with finger grooves I think it's the Buck Ranger. It has served me well over the years. Im just looking for something different.
The Ranger is the smaller 112. Both have been made in finger groove styles. I find the 110 to be a lot more knife than the 112, which is a pro or a con depending on personal preference.
If you dig the idea of carbon steel, I can offer this observation. Not all carbon is the same.
I love Opinels for every day carry and for hiking and such, but steel in my couple of Schrades is just different. It's harder. Sharpens up with a teeny tiny bit more effort (just a bit more pressure on the stones) but holds an edge insanely better when working with wood. Just got back from a week on the beach using a Schrade H-15 (fixed blade) for making fires and an Opinel #9 for everything else. Used both killing time doing some "whittling". The Schrade easily shaves even after splitting wet drift wood all week. My smaller 5OT is the same way. Just holds an edge forever.
If you're looking at old USA made Schrades, I would look at the 125OT or the 7OT. Just be careful to avoid knives with the "Schrade+" tang stamp, as that indicates stainless. If it were me, I would be inclined towards the 125OT as the pattern is more directly linked to the older "folding hunter" pattern that was around for a very long time as a slip joint. The 7OT is something of a copy/response to the Buck 110. The 125OT is a liner lock.
If you like the lockback of the 7OT but can't find one, Moore Maker makes a 1095 folding hunter that bears a close resemblance to the Schrade 7OT/LB7 frame pattern (nice homage, imo).
As other have noted, the Queen Mountain Man in D2 is another worth looking at. And GEC has another large lockback that has no finger guard. Missouri Trader maybe? Maybe somebody can clarify.
My suggestion: Schrade 125OT.
Oh wait... another, harder to find to Schrade would be the 51OT Sunfish. 3" drop point blade. Lockback. And in the old USA made version (not the current Taylor made saddness), carbon steel. Usually these go for top dollar.