![]() This is a protective device required of all railroad grade watches so that the time cannot accidentally be changed by the crown dislodging. NOTE: Lever set pocket watches use a lever located under the screw off bezel which slides out to release the mechanism that locks the time setting feature. Today, the power reserve is more often found on self winding wristwatches, where its’ function is more of a novelty, as the self winding movement keeps itself optimally wound when worn. The power reserve indicator was a rare and desirable feature on these early railroad watches as they were manually wind, and the power reserve was actually useful to inform the wearer to wind the watch when the mainspring was running down. It is like a battery indicator on your computer or cell phone. The display shows the number of hours of operation remaining before the watch will stop running. NOTE: The up down indicator refers to the secondary dial at 12 o’clock which is a power reserve indicator. An outstanding example in mint condition. Beautiful condition enamel “Montgomery” dial with 5 minute indications in red, with blued steel hands. Featuring a 23 jewel 5 adjustments Vanguard movement, serial number 24.6 million. ![]() ![]() Waltham railroad approved pocket watch with up-down indicator circa 1924. ![]()
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