Curtis S-51, S51 | Dominion O7RB | Ilco O1007RB, 01007RB, RB | JMA SAR-69D| Original 275RB  | Orion 01007RB | Silca SAR6 | Taylor 43RB

6 Pin. RB Section. Most original Sargent keys, along with some aftermarket blanks, have a small RB stamped on the head of the key.

Invest In America: Made in U.S.A.