Elgin Shockmaster Pocket Watch Star Watch Case 5916 17j. This is a vintage Sterling Star Watch Case Co. & Elgin 17 jewel movement watch, model 5916. The watch features a sterling case housing an Elgin 17 model 5916 jewel movement. Star Watch Case Company, while not as renowned as Elgin, was a prominent case maker that often partnered with movement manufacturers like Elgin to create complete watches. This partnership allowed both companies to focus on their strengths, resulting in quality timepieces. The watch winds and keeps time, showcasing the enduring craftsmanship of both brands. The acrylic crystal does show some signs of wear consistent with age. This piece represents a tangible slice of mid-20th-century American watchmaking history, a testament to the collaboration between two significant contributors to the industry.