DESCRIPTION:
APW - Ball Hamilton with rare DeLong escapement, Official RR Standard, Grade 999N, 23J, 16S, green gold-filled OF Ball Model stirrup bow recase with ornate pattern back engraving, white enamel SS dial, SW-LS, fully capped DeLong escapement with D-shaped upright pallets extending downward below the plane of the lever, jeweled barrel arbor, bull's-eye pattern nickel damascene, s#B606764. Charles E. DeLong's escapement designs were granted U.S. patent numbers 1192812 and 1327226 on July 25, 1916 and January 6, 1920 respectively. The DeLong escapement was added to a small number of Hamilton, Illinois, and Ball Hamilton railroad grade movements of this era. These watches initially performed admirably with functional advantages of an increased escapement draw angle and a reduced recoil, but the DeLong escapement never gained widespread use as its benefits were offset by a potential for performance impairment following servicing due to this escapement's greater sensitivity to slight changes in the depthing of the escapement hole jewels. CONDITION: Mvt: GRO...
CONDITION:
Mvt: GRO, near mint cosmetic mvt condition overall, bright lustrous surfaces, some fine and micro-fine scratches, few small bits of oxide on smaller winding wheel; near flawless dial with few pinpoint surface nicks and small fine scratches; near mint hands; case shows very little wear, no dents or dings, excellent overall engraving detail with only very slight reduction of rear pattern detail, case shows no visual sign of having held another mvt but our consignor notes that he paired this case and mvt together; tight bow, crown shows very little wear; good glass crystal.
ESTIMATE:
$2000
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$3600
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