Did Sargent make a 21 1/2 dogless trap?

I just got a bunch of old traps at an auction. There was nothing great in the bunch but a Sargent 21 or 21 1/2 trap. The reason I ask is the trap has pitting and wear, but in the circle where the number is there is definitely something after the 21 as the 21 isnt quite centered in the circle. It is the old style square jaw dogless trap . The jawspread is 4 7/8 x 3 7/8 across at jaw posts.

Yes, Sargent made a 20 series, #20, 21, 21 1/2, 22. 23 and 24. They are cast square jaw, dogless traps. The #23 and #24 are offset with teeth.

Very cool old trap.