Yeppy, but fluid drive is what Dodge called the fluid coupling with a standard 3 SPD transmission. My 52 had two options, fluid drive or Gyro-matic/M6. If you got the standard option transmission, your emblems said fluid drive. If you got the semi-auto M6 option, your emblems said Gyro-matic.
Not sure what Chrysler and Desoto did. I know they called their M6 transmissions Tip-toe, Desoto and Presto-matic, Chrysler. Maybe they they didn't offer a straight up fluid drive? You could also of had gyro-torque on some cars which is M6 with a torque converter instead of the fluid coupling.
Earl