Fine Hamilton 992B railroad watch. Recently serviced

A fine 16 size railroad pocket watch made by Hamilton Watch Co. in 1943.
The 992B is probably the quintessential railroad watch as it incorporates all of the state of the art horological developments and improvements made up until that time. In continuous unaltered production from it's launch in 1941 until 1969 when the factory closed it's doors for the last time. Renowned for it's reliability and astonishing accuracy the watch is highly prized amongst collectors and this is a particularly fine example.
The nickel plate movement features a fully capped Swiss Lever Escapement with double roller, Sapphire pallet stones, gold timing screws, and a sprung micro-regulator. Also featured is the innovative "Elinvar" white metal alloy hairspring and associated mono-metal balance wheel. This is a huge improvement over the carbon steel hairsprings used earlier which were susceptible to timing variations due to changes in ambient temperatures. To combat this, split bi-metal balance wheels were used which required precise set up and adjustment. The "Elinvar" spring was also found to be anti-magnetic, another problem that was becoming of concern due to the increasing  use of electrical appliances.
This particular watch has just been fully serviced and is running strong for the full length of the wind whilst keeping time within a couple of seconds per day. The watch is crown wind and lever set (withdraw the small lever by the 1 and rotate the crown to set the time) both functions working smoothly.
The original 3 piece case is in lovely condition with no dents, dings or abrasion beyond normal to be  expected age related light scuffing. The screw on/off covers both remove/replace easily and both close down square and tight all round.
Double sunk white enamel "Montgomery" dial in as new condition, please see the photos. The time indicated by an excellent set of black enameled railroad grade hands and all under a new acrylic crystal.
 
Overall a highly collectible railroader in fabulous overall condition and working exactly as intended.