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This E. Howard watch was made after the companies acquisition by the Keystone Watch Case Company and was used as the basis for the cheaper Series 11 Rail Road Chronometer.
The 21 Jewel lever set movement has a Breguet sprung cut compensating balance with double roller and screw micro regulator. All Howard movements were adjusted for Isochronism and this is also marked Extra Adjustment, Temperature and Five positions as well as having the arrow and star mark showing the adjustments made. The 3 piece
double sunk dial is the Montgomery used on some of the American railroads. The serial number dates it to 1912 or 13.
The Swing Ring American made case is by the Crescent Watch case Company (then part of the Keystone Watch Case Company) and is engraved inside "E. Howard Watch Co. Boston", it has the marks of a top grade 25 year "Extra" 14 carat Filled Gold case which at the time was advertised as "having about TWICE AS MUCH GOLD as any other filled case heretofore made".