Zenith cal. 2572PC (E)

See… Technical details

Zenith 2572PC
automatic
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17/23 jewels
f = 28800 A/h
power reserve 44h (ETA 2824 42h)
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Stem W3721 / for 2572 family because date function changing. If date function is not important for implementation, can use W2936 (stem for 25xx family).
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Hands
1.30 x 0.80 x 0.20mm – different of standard ETA (1.50 x 0.90 x 0.25mm), need modifications (-,-,-)
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1975-1978, 205000 – last Zenith vintage “in house” movement!?
ball-bearing rotor, ball-bearing crown wheel, beryllium bronze
micrometer regulator – first time in Zenith! (excenter regulator before)
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Shock protecting
Kif-Ultraflex (before Incabloc)

Family:
2572: manual, sweep second
2572C: manual, sweep second, date
2572P: auto, sweep second
2572PC: auto, sweep second, date

exist and 2572PC E
See… Zenith codes

382 = variant of cal. 2572 PC, with Kif Trior shockproofing. Zenith marked this as ‘2572 PC E’ and movement code 382 (instead of 380)

but, this is 2572 PC E with Kif Ultraflex (not Trior)

23 jewels! – OLD TYPE OF ROTOR INSCRIPTION! – caliber without E

Diference (2552PC)/2562PC/2572PC – only regulator!

2552PC – 21800 A/h
1969-1972, 15000
ball-bearing rotor
ball-bearing crown wheel, beryllium bronze
excenter regulator

2562PC – 28800 A/h – First Zenith 28800 A/h
1972-1975, 65000
ball-bearing rotor
ball-bearing crown wheel, beryllium bronze
excenter regulator

2572PC – 28800 A/h
ball-bearing rotor
ball-bearing crown wheel, beryllium bronze
micrometer regulator