That is quite a quest you are embarking on. That window awesomely rare.
Good luck.
I think there are a number of folks on the site that would like to learn what you find.
Thanks, but I see the green tinted window can be bought new many places, and not terribly expensive either.
However, when looking at the old window with electric heating, it looks like it is just a metallic strip, held in place all around the perimeter of the window by some tape. Is that standard or was this made as a retrofit?
Cheers,
Christian