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ETA 1301

 

ETA 1301ETA 1301

Description

The ETA 1301, which was produced around 1950 is an interesting ladies' watch movement. It is rather small with a diameter of 8 3/4 lignes and so ideal for small watches.

It uses a large, gold-toned, Incabloc-protected Glucydur balance with screws and a long regulator arm for the hairspring and so guarantees a quite high precision.

The construction of this movement is unusually high, around the ratched wheel, there are even two gears above it. The large height is due to the directly driven center second hand and to the still center-located, directly driven minute wheel. In later constructions, the minute wheel is driven indirectly and on the dial side, to free enough space for placing the second wheel below the single main plate.

Technically and optically this is a very nice movement.

 

ETA 1301 dial sideETA 1301 dial side

 

 

 Technical data

ManufacturerETA
Caliber1301
Number of jewels17
EscapementAnchor with pallets
BalanceGlucydur screw balance
Shock protection(s)Incabloc
Balance cock directioncounterclockwise
Hairspring studfixed
Regulator typeLong regulator arm
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel
Center wheel
Mainspring barrel
Winding mechanismyoke
Setting lever spring3 holes
FeaturesSCD
FunctionsHour, minute, second
Beats per hour18000
Size83/4'''
Image in Flume Werksucher 1962 3
ETA 1301ETAETA13018 3/4''''''ETA 130117 Jewels, 8 3/4'''''', 18000 A/h, SCD
Factsheet

 

 

Usage gallery

Onsa Sport ladies' watchOnsa Sport ladies' watch