The left one looks right to me, i can't speak on the right one, it looks rather opaque which i havent seen before but might have to do since these are in relic condition. I would say in the condition they are in, it would be hard to find a collector that would buy them. If I were you i wouldnt go more then 10-20$ and even that is getting generous.
All the best,
So not much compared to better ones. Thanks.
In this condition and if original, I doubt you could give these away. There is very little value here, especially when originals in good condition are easy and reasonably cheap to come by.
Looking for LDO marked EK2s and items relating to U-406.....