`Offered here is a rare Harvard chronograph, housed in a “clamshell” 3-piece waterproof case, first patented by Gallet. This clamshell is 37mm, and features sharp, faceted lugs. The watch, although a smaller, lesser-known brand, features an exquisite two-tone sector and snail dial. The watch is in great vintage condition. The case is razor sharp and unpolished. The dial shows some light wear, consistent with aging over time, as this watch was likely produced in the 1940s.