TOPIC: Kainer Stern lights on Alumacraft

I am trying to find some Kainer stern light lenses or a substitute that will fit for my 1958 Alumacraft Super CS. The originals are clear plastic made about 1958 and marked "KAINER 1114F" on the bottom of the lens. They are cylindrical, about 2 inches long, 1 3/4" diameter with a lip on the bottom that is just under 2" in diameter (1 31/32" OD). They are held on the Kainer stern light pole by a screwed on retainer ring that fits over the lens and holds the lip on the pole. Does anybody have any leads on where to find them?

Sorry if I am on the wrong forum. I have tried to post here several times without success. At least I can't even find my owm threads.
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Thanks
Lloyd

My Flying D came with a glass globe, Kainer 1114. Maybe they are crystal, cause I've seen them on ebay for big bucks?
-David