There were ‘Custom’ models as well, which were of a more modern design (for that era) with higher jewel counts so were more expensive – although yours is not a Custom, it is similar to some of the Custom designs. Parts are not available other than from a donor watch, so hopefully yours doesn’t need anything more than a service. In good condition these are very nice, reliable and accurate movements running at a standard 18,000 beats per hour – after yours is serviced it’s likely to be running very well. The ‘7’ relates to the features of the watch – I’ve not found exactly what the seven are though! They were produced up to the late 1960s, and are one of Citizens better known vintage lines, with a wide variety of models. Other models used this movement too (see the 52 Family Tree: ) but the Crystal Seven is characterised by having date and day complications, with a quick set mechanism for the date, and flat mineral glass – hence the ‘crystal’ part of the name. The Crystal Seven models were introduced in 1965, using the ’52’ movement. It’s great to hear that you have inherited your grandfather’s watch. Thanks for confirming which watch it is □
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