A WW2 Map: Legitimate? Of any value?

I am wondering if anyone could give me some information about the piece pictured below. It is a WWII map and was drawn by an A. Fedoroff. Supposedly the piece belonged to an officer in the war, but not much else is known. Someone is looking to buy this for $600, but I'm not sure if it is worth that much, more, or even anything at all. Can anyone help? Much thanks in advance.

 

My son and I recently purchased two of these, one each for Europe and Pacific War zones. They are in much better shape, judging from your photo, than yours. I think we paid $40 for the pair. Hope this helps. Best Wishes.

 

My son just corrected me, he says we paid $60.

 

My grandad recently passed away he was in the 52nd lowland division in signals we found German maps rather alot of them I don't know if they are worth anything or whether they will just hold centimental value I am not looking at selling them but I dont know if they had a particular value to themI have alot of photos of Germany during and after that I am going to upload soon so if anybody can help with those aswell that's old be grateful

 

Look forward to seeing the pics, Hobi.