Recognise this tricolour fitting?

[eddystone]

Not an Aqua Signal unlike all others on boat - could this be a Perko?

 

[CFG98]

Looks like a popular nav light I can't remember the make of that has simply lost is lens.

 

[eddystone]

No lens removed to fit LED bulb made for Aqua Signal but the terminals got in the way of the bottom plate on the bulb.