Re: I think yours might need a service, it should fully charge when worn.. >>> 
(views: 10)
Ricky Lee -- Wednesday 29 October 2008, at 06:08PM
Nope, it had a complete COA less than a year ago. 
I have to resort to the watch winder occasionally because I only wear it 1 to 2 hours a day. If worn for 6+ hours straight, it will get a full wind. So the real problem is I don't wear it enough! 
} Here is a link to a closed Ebay
} auction of such a watch (EZA)
Whoa! That's a funky one! And.. wow, they're asking 139 euros! I practically stole mine..
} The book from Mr. Heinz Hampel..
Amazon.com does offer it. Sounds intriguing! Even at US $58, I may not be able to resist that one..
} ..you gotta have this book anyway..
That's what I'm afraid of..
Seriously, thanks so much for the lead, Reto! The most I've been able to turn up so far is this page, which has some basic info and some good photos of the movement.
Hermann Becker HB313
Description
At the beginning of the 60ies, the movement manufactury Hermann Becker of Pforzheim, Germany
released their last selfwinding movement, the caliber 313, called "Ultramatic".
The HB 313 is a 11 1/2 ligne selfwinding movement whose rotor winds in both directions with
a rocking bar winding system. It contains a contemporary two-leg ring balance, which is beared
in two Antichoc S65 shock protection systems. The hairspring is connected to a moveable stud
and can be regulated by a short regulator arm.
The 25 jewel movement has got a directly driven center second hand and on the dial side a
yoke winding mechanism and a number of cap jewels to reach the high nimber of 25 jewels.
The large date ring advances slowly and can be corrected semi-fast by turning the time back
and forth.
movement view without rotor
dial side view
Technical data
| Manufacturer |
Hermann Becker |
| Caliber |
HB313 |
| Number of jewels |
25 |
| Escapement |
Anchor with pallets |
| Balance |
Nickel screw balance |
| Functions |
Hour, minute, second, date |
| Beats per hour |
18000 |
| Size |
111/2''' ligne |
|
| Factsheet |
Usage gallery
Anker divers' watch
Then, too, there's this thread on WUS, where the author makes the statement - "The
above grading is open to debate – particularly if a maker was selling
ebauches, the end user could determine whether he was going to put in a
Swiss lever or a pin pallet lever. Thus you might get a cheap looking
movement which still has full jewelling and a Swiss lever. In my
general experience, however, of the above, Förster, Otero, Kasper and
Hermann Becker always made high-quality movements while companies like
Thiel made cheap movements of plate-and-pillar construction which may
be used either way."
This, combined with the fact that my
watchmaker was quite impressed with the HB313 when he did the COA, has
given me a pretty high opinion of the movement. If nothing else, it's
not a 'belly button movement' (IOW "everyone has one" 
) like ETA or Unitas. Which is A-OK by me.
Thanks again for your help, Reto.
-Ricky
The German Ebay auction listed the EZA watch as a watch >>> (views: 12)
Reto -- Wednesday 29 October 2008, at 07:38PM
with a very rare and collectible movement Ricky. And I think the seller
is right. I really love to have watches with rare movements. Another
thing only a WIS can understand probably. I would say that all these
old movements from manufacturers which have long disappeared are very
collectible and horological milestones. Interestingly also, that HB
used shock protections from Rula. Probably invented at a similar time
as the Incabloc.
Knowing that there is a HB313 in there, I look already completely differently at your selfmade watch Ricky 
today, gettin' up at 0400 as I did. 
(views: 29)
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auction of such a watch (EZA) >>>
(views: 6)