I have inherited my fathers extensive lock & key collection. The collection is made up of 100's of keys and locks from all over the world. He has it beautifully displayed on antique barn wood hinged on a post. He had won 2nd place at a convention a few years back. We need to have it appraised and are interested in selling it. Where can we find a reliable appraiser in the Maryland area? What is the best way to locate a buyer?

Thank you for any ideas!