TOPIC: Wanted: stern light lens for 1963 MFG Westfield

I banged my knee on the stern light today and broke the plastic screw on lens. Any ideas where I can find a replacement, anything that fits really. I've been googling with no success so far. It screws on over the threads on the chrome pole. The inside diameter of the lens seems to be about 1 1/8".

Thanks,
Dan