Hamilton 64A

Basic Information

Name	Hamilton 64A
Alternative Name	ETA 2452
Base Calibre	ETA 2452
Manufacturer	Hamilton
Launch Year	1965
Caliber Family	Description 60: manual wind, 10.5" 61: manual wind, 11.5" 62: manual wind, date 63, 689: Automatic 64: Automatic, date suffix A: recess instead of aperture in the automatic bridge Related calibers Hamilton 63, Hamilton 63A, Hamilton 64, Hamilton 64A, Hamilton 689
Is COSC certified	No

Technical Details

Lignes Dimensions	11.5 ‴
Dimensions	26 mm
Height	5.3 mm
Further Measures	Mounting Diameter (Dm): 25.6mm Stem height (T): 1.85mm Mounting Height (F): 1.4mm
Power Reserve	47 hours
Frequency	18,000 vph
Jewels	21

Complications and Specifications

Shape	Round
Complications	Sweep Second Date
Shock Protection	KIF
Regulator Type	Pinned Regulator (or Index Regulator)
Movement Type	Automatic
Rotor Type	Central Rotor
Escapement Type	Swiss Lever
Control Type	Balance Wheel
Winding Type	Automatic (Rotor-Driven)
Setting Type	Stem Set (Crown Pull)

Additional Information

Hand Sizes	1.50 x 0.90 x 0.21mm
Hand Count	3
Country Of Manufacture	(not set)
Notes	Remarks: during manufacturing periode modifications of base plate (cf. Fig.1, 3) Modifications against according ETA family: Kif shock protection, stud carrier, softly adustable regulator, barrel, rotor, automatic bridge with access to regulator, probably just the designators were changed in 1966, as samples with different numbers on baseplate and rotor are known from this year Other data: balance staff: U2226 / U3136 for balance with/without screws stem: W2426, W3226
Signature	1-2) ca. 1965: Hamilton Cal. 63A, Hamilton 63A, 21 Jewels - Patented; Kif-Flector (Hamilton 63A) 3) ca. 1965: Hamilton Cal. 63A, Hamilton, 63A, 21 Jewels - Patented; Kif-Flector (Hamilton 63A)
Import Codes	AOH — Hamilton HYL — Hamilton VXB — Chase, Hamilton, Louis

Compatible Parts

No parts linked yet for this caliber.

Metadata

Created At	Sep 15, 2023
Updated At	May 26, 2026, 4:43:50 AM