Well, just received this odd ball. It measures 1.95" at the bourellet OAL is 7.45" and weighs 3lbs 12.25oz empty. The fuze well is the same as the U.S. 6pdr FG/2.24" Tank gun. Stamping on the base is D.- S. G. & A. Co. 1900, which is the same stampings on my 6pdr FG round. Clearly U.S. Ordnance marked on the body and rotating band. Any ideas? Cheers, Bruce.