Just came across this one.
Its a Sargent 3182 CT. Looks like it crimps the insulation at the same time as the conductor.
View attachment 1715859287
View attachment 1715859284
Catalog state that its for terminals for 20 to 14 gage.
Maybe
A 18-20 ?
B 14-16 ?
C 12 ?
You'll have to see how specific terminals and wires actually fit. After you crimp, give it a tug. Shouldn't move.