You can also assume that the movement likely has some Grime, dirt and Rust. You can also note from the photos that the Escape wheel is loose and is laying inside the clock. It may also be missing some other parts.
Otherwise, the clock looks restorable , but I'm not making guarantees. The item "Rare WWII Seth Thomas Course Zig Zag sub avoidance U.Navy Ships Clock- 6 in" is in sale since Monday, December 31, 2018. This item is in the category "Antiques\Maritime\Maritime Clocks". The seller is "lostintheozarks" and is located in Joplin, Missouri. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Japan, Sweden, South Korea, Taiwan, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Singapore, Switzerland, Norway, Ukraine, Croatia, Bermuda, Guernsey, Gibraltar, Iceland, Jersey, Liechtenstein, Sri lanka, Luxembourg, Monaco.