You will not get an accurate evaluation in a forum. There are several prices within the same firearm. What it would cost to replace is one value, what a store would actually try and sell that firearm in the condition it is today is another value, what it may sell for in a retail store is another value, what a dealer might pay for it is another value, what a dealer would sell it for on consignment less commission is another value, etc.
Take the firearms to a gunsmith and have them cleaned up and ready for sale... then take them to 3 different dealers and see what values they give you after inspecting them. Make your decisions after that.