Metric Mountie,
I think the fixture was a Perko. The LED bulb I installed was a Dr. LED, model White Polar Star 40 with a two-pin base and offset locking pins on the side of the base.
The bulb I installed had arrays of multiple LEDs, but I think the new model has just one LED with cone-shaped reflectors on top and bottom. Mine draws 0.09A.
I bought it at the Defender Warehouse sale that I attend every year, but you can probably get it on this site, or if you want to really splurge, you can buy it at West Marine.