I am very cautious to suggest a price about a gun. I collect byf 41 's and can tell you that 850.00 is not even a good guess. This pistol looks to be in good shape. I only comment on things that I have some experience with, to be fair and honest to the person asking the question. Some dealers would sell a similar pistol for about 1800.00 and get it quickly
http://www.simpsonltd.com/product_in...28bdce4105e016
http://usgunexchange.com/products.cf...&sct=36&ID=834
I could go on and on with these listing for over 2k