J Poole Certified By Kew Observatory Crown Wind Silver Chronometer Pocket Watch
J Poole certified by Kew Observatory crown wind silver chronometer pocket watch. This chronometer watch has the certification engraved on the top of the case (serial number on the bottom). To be certified by Kew, the watch had to go through a rigorous series of tests taking several weeks to ensure its accuracy. Dates to c1908. Code HA619ZBF.