That switch has been corrected in the A-10C Warthog Switch list the switch is a round top locking toggle with an A locking three position switch
MS27409-1A (corrected) this is a 4 pole. you can get by with a double pole
2TL1-10A, MS27408-4A or a single pole A type round head.
ah by the way nice to see my thread has warranted a 1 star rating thanks