Good Afternoon, I am new to this site and was hoping to get some advice on the value of a firearm I am considering selling. I have been out of the hunting sport for a while and do not fully understand the value of them any more. I have a 375 Holland and Holland BRNO ZKK 602. It has seen very little usage and is in great shape. Could I please get some advice of its value. It is quite specialized, but, it is a extremely well made and no longer available. Thanks for your help.