C310F - same aircraft as a U3B.
Had to fly a C310I/J for a while many years ago - IO-470 and 2 blade props - loved the old C310. Gotta be the most ear shattering weapon at takeoff for anyone on the ground .........office was right next to the runway - the C310 noise left the Bongo vans for dead!!!
Remember the strangest details - but I just loved to flick those wing lights up and down......