Messages: 26743 Location: Australia
Registered: November 2003
Just for "Black" Friday - a 13 jeweler...>
Fri, 29 November 2019 06:31
Never let it be said I'm not willing to grudgingly acknowledge another country's odd consumerism-driven celebration, (for me the only real Black Friday is the kind due on Dec 13th :-)
The movement here is an ESA cal. 9154 marked as a Hamilton Grade 683. The ESA "Dynotron" series of balance wheel electronic movements were produced from the late-1960s to the mid-1970s, alongside early quartz movements. Employing transistorised switching they offered reliable and accurate timekeeping, but the quartz technology would win. The various transitional electric and electronic movements could often have somewhat unusual jewel counts as traditional mechanical watchmaking practises adapted. It was an interesting bookend to earlier pre-synthetic jewel times when relatively expensive natural jeweling was judiciously employed, with a range of odd jewel counts.
Here's the watch, an early-1970s Hamilton Electronic.
The watch resplendent in its black plastic & chrome plated box
Messages: 882 Location: Western NC
Registered: November 2003
Re: Just for "Black" Friday - a 13 jeweler...>
Sun, 01 December 2019 13:51
I just acquired a 13 jeweler from my local source.
It's an 1885 6s Elgin PW that is out for spa treatment.
I'll take some scans & post it up when it comes back.
Messages: 26743 Location: Australia
Registered: November 2003
Yes, it works very well. There's relatively a lot of these ESA movements...>
Mon, 09 December 2019 08:56
...still running. They are reliable and long-lived.
I haven't worn this watch for quite a long time and can't recall just how accurately it was running, but I don't recall it ever being an issue. Properly serviced these will keep time as well or better than many quality mechanicals.
