I just picked up some Dolby 361 units that must be of european origin or
something. The require AC cords that have an oval head instead the
standard IEC type.

The oval is roughly 26mm wide and 14 mm tall
The hot/neutral pins are 15 mm apart with the ground centered a couple
mm below. I shaved down an IEC for a quick, successful test, but
obviously I can't have them live like that.

Does this sound familiar to anyone? If so....

What are they called?
Where can I get these with US style AC plugs or just the heads to make
my own?

Digikey or Mouser have nothing like it.

Thanks in advance.