Driver T = Tracked. So yes, tank, but also other vehicles too

Neither did I and I assume Driver T is for Tank ? I have seen that bar before as well as the machanic bar.    There’s definitely some very rare bars for these badges especially when you get into the marksmanship one's. 

I didn’t even know Driver M existed!  Too cool.  And here I thought Driver T was the one to have 

The planchet is missing the typical milled edge of the 1930’s mint medals.

I have electrical suit harness life preserver, and oxygen mask, along with several little items (that I would intend to use for reenactiing) I'm working on trying to get a flight suit and helmet from eastman finding suitable a6 flight boots that are already beaten,

Greetings, I have been collecting usaaf militaria and have most of the kit of a waist gunner set in around early to mid 1943, I have wanted to reenact usaaf in living history since I started collecting and would be curious as If anyone knew any usaaf reenacting groups in the general New England area?     Thank you, Landon Goodwin

Probably.   Fewer motorcycles than wheeled vehicles.  

Very interesting. Is the Motorcycle bar harder to find?

Wheeled Vehicle Motorcycle 

The pendant is an original Navy type that was produced by the mint circa 1930. The brooch and maybe the ribbon also have been added to complete the medal.