Couple of pinprick mat abrasions visible under magnification, and some small bits of debris stuck to the underside of the glass... I doubt it's ever been removed from the case. The case's hinges are tight, it clicks and stays shut. I see no hairline cracks, and I don't see or feel any chips... Possibly missed a very small chip or two, but I don't think so.
See my webstore for more Civil War images... See the last image in this listing for info. The item "Civil War Soldier in Patriotic Union Case" is in sale since Sunday, September 26, 2021. This item is in the category "Collectibles\Photographic Images\Vintage & Antique (Pre-1940)\Tintypes". The seller is "jack_mord" and is located in Pewee Valley, Kentucky. This item can be shipped worldwide.