Zenith codes

Project : a list of Zenith ‘model codes’ (introduced ca. 1972) and the movements behind them

The first two numbers denote the material of the case and the strap or bracelet.
For instance : 01 xxxx xxx or 20 xxxx xxx :
01 is the code for a steel watch. 20 is the code for a gold plated watch.

The last three numbers denote the movement. This thread focuses on those movement codes.

Notes :

– these codes could also be listed with a dot after the second number, e.g. 290 = 29.0.

– movements from other manufacturers (such as ETA movements) were modified by Zenith.

– this is a list of movements used in the 1970’s. Movements for ladies’ watches (though less important) are included.

Looking forward to corrections, additions, suggestions !

075 = ESA/FHF 935.112

100 = 101 (UG microtor with date)

113 = 2541

115 = ESA-ETA 955.401[/FONT][/COLOR]

116 = ESA-ETA 955.111[/FONT][/COLOR]

118 = ESA-ETA 955.291[/FONT][/COLOR]

125 = 2562

141 = 5011 K

146 = ESA-ETA 956.412

148 = 5011K with additional moonphase

150 = (hw)

154 = (hw)

157 = (hw)

165 = Omega 1100

172 = Peseux 7001 (minus subseconds)

180 = (hw)

202 = 136 HC (or 136 HCTL) with calendar, moonphase

203 = 146 HP

205 = ESA-ETA 555.xxx[/FONT][/COLOR]

210 = AS 5100

216 = AS 5103

225 = ESA-ETA 955.xxx

[/FONT][/COLOR]226 = ESA-ETA 955.112

230 = ETA/Unitas 6497

231 = ETA/Unitas 6498

267 = ESA-ETA 956.xxx

274 = 2562 C

290 = 2562 PC

305 = Omega 625

337 = ESA-ETA 955.114

345 = ETA 2832 (36000 bph)

346 = ETA 2832 ?

352 = 1730

355 = 1740

365 = 2572 C

360 = 2572

380 = 2572 PC

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

388 = 2572 C minus seconds indication

390 = 1733

392 = ESA.ETA 255.481

393 = ESA.ETA 255.483

400, 410, 420 etc = cal 400, 410, 420 etc (After 1986)

405 = Movado 405
408 = Movado 408

415 = cal. 3019 PHC
416 = cal. 3019 PHC
434 = cal. 3019 PHC
418 = cal. 3019 PHF
437 = cal. 3019 PHF

450 = ETA 2850

453 = ETA 2852

456 = ETA 2872

460 = ESA 9361 (quartz stepper motor)

462 = ETA 2892-2

471 = 47.1 (Zenith Time Command, quartz – version with asymmetric button arrangement)

473 = 47.3 (Zenith Time Command, quartz – version with symmetric button arrangement)

485 = ETA 2671

489 = ETA 2671

490 = ETA 2892

490 = quartz

495 = ETA 940.111 (quartz)

500 = ESA 9162 (tuning fork)

505 = ESA 9164 ? (tuning fork)

510 = ESA 9180 (quartz stepper motor)

515 = ESA 9181 (quartz stepper motor)

535 = hw extra thin

545 = ESA-ETA 959.001[/FONT][/COLOR]

738 = hw