I acquired this from Harris Bros. Auctions in Flint Michigan. It was on the desk of John O’Sullivan, a beer distributor in Flint. They said it had been on his desk for as long as anybody could remember. He was a high end collector. At the auctions he was the guy who would pay whatever it took if he wanted something. It’s 21 long and almost 20 lbs. I can’t find any markings and don’t really know the origins. It may be a a one of a kind. The propeller turns, the rudders and elevators are movable. The item “WW I Submarine Model Reproduction Desktop Chrome Marble” is in sale since Sunday, July 8, 2018. This item is in the category “Collectibles\Transportation\Boats & Ships\Military\Models”. The seller is “finder1jp” and is located in Eaton Rapids, Michigan. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Israel, Mexico, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica.