Timex were very successful with their electric watches; they were cheap movements and most of the models (calibres) were produced in large volumes. Surprisingly, the early models like the 67 were of moderate quality being fully jewelled and with polished screws although still with plated base-metal cases. Their success in the electric watch market place almost certainly contributed to Hamiltons’s financial problems in the late 1960’s.

Timex Electronic M87

The table below is my attempt at summarising the various Timex Models — Timex called their calibres “Models”. As you can see, there are many different Models but with the exception of Models 67 and 84, most resemble the very common Model 40. However, it is often difficult to identify a Model from a quick visual inspection; the best way to identify the Model is from the dial markings. Timex had a numerical system that incorporated watch style, movement model number and year. This code is usually printed on the periphery of the dial but is sometimes hidden by the crystal. In the thumbnail image on the right (click it!), the code on the dial is “99178770”. If you read this from right-to-left, this is a 1970 model (xxxxxx70) that has a Model 87 movement (xxxx87xx) and appeared in the Timex brochure as watch style 9917 (9917xxxx).

Unfortunately, the allocation of a Model number to a particular calibre is not in sequence. i.e. Model 67 was released before Model 40. The left hand menu shows the main base Models organised by release date; within each link, you might find examples of the variants. i.e. M40 will have examples of Model 40 (no date) and well as Model 42 (day and date).

	Model 40 Base calibre electric movement 22.1 by 28.70 mm no date 21,600bph	Model 41 electric movement date	Model 42 electric movement day and date
	Model 50 Base calibre electronic movement 22.1 by 28.70 mm no date	Model 51 electronic movement date	Model 52 electronic movement day and date	Model 65 electronic movement date second time zone
	Model 62 Base calibre quartz controlled balance movement 28.7 mm date introduced 1972	Model 63 quartz controlled balance movement day and date introduced 1973
	Model 67 Base calibre electric movement 30.50 mm no date 21,600bph introduced 1962
	Model 69 Base calibre ladies electric movement 15.4 by 18.0 mm no date 21,600bph	Model 71 ladies electric movement date
	Model 82 Base calibre electric movement 15.3 by 18.0 mm no date 21,600bph world’s first ladies electric movement
	Model 84 Base calibre electric movement 30.50 mm no date 21,600bph	Model 85 electric movement date	Model 87 electronic movement date introduced 1969
	Model 253 Base calibre electric dynabeat movement 22.1 by 28.7 mm no date 28,800bph	Model 254 electric dynabeat movement date	Model 255 electric dynabeat movement day and date	Model 265 electric dynabeat movement date second time zone
	Model 260 Base calibre electric high frequency movement 26.51 by 28.76 mm no date 28,800bph	Model 261 electric high frequency movement date	Model 262 electric high frequency movement day and date