[ARC5] Anybody know what radio a FS20 dynamotor belongs to?

[J Mcvey via ARC5]

The case and paint are in very good condition, I haven't cleaned or greased it yet, so I don't want to power it up until I do, but I'm 99% sure it's good.
The input is 11.6v / 23 amps
The output is 425v / 375 ma
It is painted in the military style black crinkle paint, so chances are it belongs to some military radio set, right?