The CDV has excellent contrast, tonal range and near perfect sharpness on the subject and his inventions. The mount is in amazing condition with sharp corners. The backmark is by a Michigan photographer. A few minor stains consistent with age can be seen. Overall, you are considering a very rare 19th Century Patent photo in super condition for your collection.The item "CDV PATENT PHOTO MAN DISPLAYING INVENTIONS FOR COPYRIGHT With CIVIL WAR STAMPS" is in sale since Sunday, October 11, 2020. This item is in the category "Collectibles\Photographic Images\Vintage & Antique (Pre-1940)\CDVs". The seller is "nic-o-matic" and is located in Lawrence, Kansas. This item can be shipped worldwide.