One minor brass (pictures 4 and 5). The case said : Hamilton Watch Co.
10 K Gold Filled - Lancaster PA! Hunting: The stem is at the 3:00 position, and the movement is meant to be mounted in a case that has a covering over the face.
"Sidewinders" are hunting movements in openface cases. " style="box-sizing: border-box; -webkit-tap-highlight-color: transparent; color: rgb(27, 118, 176); text-decoration-line: none; background-color: transparent; -webkit-font-smoothing: antialiased;>. Production year of the movement within +/- 3 years>.
Production date of the movement according to factory records.