Luftwaffe Aviation Map

[desantnik]

Unfortunately I don't have a photo, but I'm interested in picking up what appears to be a Luftwaffe aerial navigation map printed on bright yellow, water-resistant, heavy cloth material. The map covers most of the Soviet Union and is rather large, I'd estimate 3' x 3'. The map seems similar to the US' downed pilot maps printed on silk, but is printed on thicker, water-resistant material.

Anyone seen anything similar or know about what it's worth?

[François SAEZ]

Marked "Merkator Projection"? What date?

[desantnik]

Marked "Merkator Projection"? What date?

I remember there were latitude/longitude lines so it was probably marked Merkator Projection. I don't remember a date.
I'm guessing from the distances depicted it was a long-range bomber(?) map since they would have been too far to traverse on foot or even a vehicle. I guess the yellow color would aid in a low-visibility environment.
Again, anyone seen one or suggest a fair price?