Gas and burner is exactly what I would guess, too, SGT41, based on the characteristic jaws. Did you see the pin holder formed where the tweener areas meet? That is usually in the tip. But the offset handles that 4.c homed in on are definitely atypical. I have a few pairs, all early, including S&H Red Devil, Kraeuter, and Elliott Lucas from England, and a couple others. Some have punches or a pry and driver blade on the handle ends.
What is that mark above the pivot? Does that say [MULTI]?