Recently I just purchased this Uniform, after doing some research I found this blog post by the Naval War College Museum.
Soundings in Narragansett Bay's Naval History: Pay Corps Officer's Uniform, 1918
According to this this type of coat was in use for only four months (16 November 1918 and 17 March 1919)!
Is this as rare as it says it is I'm curious has anyone seen any Uniform like this before, with the same insignia or have any idea as to worth, or history? It says D. W. MC CORD as the owner, and it's dated 1/13/19, made by Schwartzman & Slesinger.