Erdi 16-Jewel

I will check soon Ricky, thanks. If the bridges are so straight lines, it always points to a A.Schild movement. Will check with Dr. Ranfft's DB (n/t) (Views: 6)
Admin -- November 16, 2008 06:43AM

The closest I could find is this Alpina 598, I suspect that your movement >>> (Views: 19)
Admin -- November 16, 2008 09:52AM
..is actually older then 1955. The closest movement to yours from Ranfft.de is this Alpina 598

Btw. I search 5 hours (five!) on the Ranfft database and >>> (Views: 16)
Admin -- November 16, 2008 10:38AM
I am quite sure that your movement is not listed there. Cyma also made similar movements. However what I found unique in your movement picture is

1) the unique v-shaped small bridge on top for the sweep seconds

2) the lack of any markings

Maybe there are some markings under a bridge or on the dial side. But do not worry, after having looked at the movement picture for more then 5 hours, I will recognize it when I see it in the future.

Five hours?! Scary!

You're a better man than I! I spent.. (Views: 11)
Ricky Lee -- November 16, 2008 03:05PM
..perhaps 2 hours there last night...

} I am quite sure that your
} movement is not listed there.

..and reached the same conclusion. I did find some similarites to this Mora:

Mora vs. Erdi

Chiefly the (most unusual!) use of 4 spanner notches on the caseback. Indeed, the casebacks look to be two-peas-in-a-pod, right down to the font of the markings. I wouldn't be surprised if they shared DNA.. but who knows?

} 1) the unique v-shaped
} small bridge on top for
} the sweep seconds

I was keyed on that feature, too. I am smiling!

It does indeed appear to be unique.

} Maybe there are some
} markings under a bridge
} or on the dial side.

I'd sure like to have a look at the dial side (as bjohnson suggested), but don't trust my watchmaking skills enough to disassemble it. I'm quite fond of this li'l guy.. Wink, wink...

} ..after having looked at the
} movement picture for more then
} 5 hours, I will recognize it
} when I see it in the future.

Burned into your memory, is it? Laughing out loud!

Sorry to put you to that much trouble, Reto. I am frowning.

But I do appreciate it! Thumbs UP!

-Ricky

No problem at all Ricky. Mysteries that do not solve too easy are the interesting ones (n/t) (Views: 4)
Admin -- November 17, 2008 03:49AM

The circle of brass seen on the balance pinion cap jewel is the shock protection.. (Views: 17)
bjohnson -- November 16, 2008 05:05AM
..but wristwatches without shock protection were made up to the 1960s.

I don't recognise this particular movement. Unless someone recognises the bridge layout or you spend time browsing the movement photos at Dr Ranfft's site, the traditional method for movement ID is by the keyless works (ie winding and setting levers). You'd have to take off the dial to see them. Also listing the movement diameter would greatly help.

PS - the tabs are part of the spacer ring for the movement and press against the case back (or vice versa). This style of spacer ring is typically used to push the dial against the other side of the case. So the spacer ring holds the movement in all three axis of movement

Doh! Yes, I see now. The movement's a 10 ligne (22.55mm diameter). Post contains photos

(Views: 12)
Ricky Lee -- November 16, 2008 06:03AM

Shock protection

I may indeed spend some time browsing the Ranfft database.

Thanks!

-Ricky

another 2 questions: does the thick ring around the movement... (Views: 14)
Brian Uziel -- November 16, 2008 03:11AM
1. serve as shock resistance for the movement? and 2. is the tab on that ring there to make better contact with the case back, and is part of anti-magnetic protection?

Paul's right on both counts.. (Views: 11)
Ricky Lee -- November 16, 2008 05:48AM
..the ring provides no shock protection that I can see, and it does indeed apply pressure to the movement via the caseback pressing on the 3 tabs.

-Ricky

I do learn something new everyday I am smiling!

(n/t) (Views: 2)
Brian Uziel -- November 16, 2008 09:43AM

Looks like just a big spacer >>> (Views: 9)
Paul December -- November 16, 2008 03:55AM
Since the 3 tabs are evenly space, I'd guess they put pressure against the dial from the case back.