Are there any websites to get the value of a piece of artwork?

Question: Are there any websites to get the value of a piece of artwork!?

I have spent over 2 hours trying to find the value of a piece of art that I was given!. It is a piece of etched art by Escher!. It is called relativity!. I can only find the value of a print copy of it!. Any help on this would be greatly appreciated!.Www@QuestionHome@Com

Best Answer - Chosen by Asker:

It would be worth a mint!.!.!.!.!.try any major art institutions for pointers!.!.!.!.!.!.like a National Gallery or similar!.!.!.!.They should at least be able to point you in the right direction!.!.!.

Reputable auction houses will also have valuers employed!.!.!.!.!.Christie's!? Sotheby's!?!?!?!?Www@QuestionHome@Com