If you are interested in selling an antique firearms, or a collection, John B Henry provides appraisal services upon special request. The John B Henry team has more than a century combined experience collecting and appraising fine antique firearms. Please contact us via email to have us evaluate your firearm(s). Include as detailed and complete a description as possible, along with clear photographs of your firearm and your contact information. Complete the information below for each gun. The accuracy of the appraisal is dependent on the quality of your images and the information you provide.