Just got these back from Brian Leiser aka 31jewels.

It will be interesting to see how these keep time.

 

Nice! Let us know.

 

So far they are keeping good time

 

What was the advantage of the superbeat? Is it basically a because we can watch for Citizen?

 

Very nice, Citizen made some great watches from that era, going toe to toe with Seiko. Here's a close relative (or competitor ) Hi-Beat from the same time period:

 

They were trying to make the cosc certificationand beat the swiss i think.

About that time the Swiss decided that they didn't want competition from the Japanese that was rapidly overtaking their abilities and they cut the Japanese out of the COsC competition.

 

I'm time these on both tool watch and watch check


I'm trying to figure out some of the discrepancies that I'm seeing.

 

00301411

 

00800964

This is the june 2016 measurement before service

 

00800964

 

00800521

This has an odd discrepancy between toolwatch and watch check.

Maybe not so odd. It was losing time when sitting

 

00800521

 

00301411

 

Citizen Leopard superbeat 10 36k

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