On offer is a rare / extremely nice 1931 Waltham Vanguard Pocket Watch with up / down wind indicator, double sunken dial & a rare Lossier Inner Terminal Hair Spring. The Lossier hair spring was used in earlier models but rarely seen in models of this date. The Railway grade, Model 1908 movement is adjusted in 6 positions, in good working order, ticking strongly, and kept time over a 24 hour period & has the serial number 27538401 for c1931. The 16S Keystone 10k Gold Filled case has the serial number 8087770. Dial has a tiny crack at 11 otherwise in very nice condition, case & case back also in very nice condition.