I’m not an expert by any means, but would guess a #2 or 3 Victor, both of which are double long spring style traps.
If I’m right, there would be another spring and probably some chain & wire embedded in the wood. Most likely scenario would be someone trapping for coons when the price began to go up on our “coat type” skins in the early to mid ‘70’s. Coon got caught by the back foot, pulled loose from whatever the trap was tied to, climbed the tree, got tangled and escaped (or not).
The guy came back, looked for the trap and catch awhile and gave up without ever thinking to look up. A tree can grow a lot in 40-50-60 years.
#1.5, 2 and 3 long spring traps were notorious for creating many “ Ole Nub Foot” and “Old Three Legs” coons. Those traps were all that lots of young trappers (and some older guys too) had to use, and the ones who didn’t have some guidance from a mink trapper or someone else with experience had to learn stuff the hard way. All they knew was to add some wire to the chain, tie to something solid, and hope for the best. Most of them had never heard of a drag or drowning set in those days unless they had been around an experienced mink trapper. Lots of them learned that there was a long ways between catchin’ and skinin’ before very much good information began to be shared.
What part of Texas you live in?