Early one button chronograph - confused with movement identification

[csabaw]

I just received this watch, and try to identify the movement. I found some similar movements on the net, but no one is exactly same.
First I thought it's a Minerva derivative (There is an M stamped on the bridge), but later found pictures on the net stated Landeron 3 and some early Eberhard chrono movement also seems to be similar.
The dial lost the paint in the logo area, but finally I could read that the brand is DAMAS.
I found: DAMAS. Founded 1903 in Tramelan By CH.ED. J Beguelin
(Later produced watches also for military order)
So the M on the movement is probably the logo of the company (see the old AD)
But to get more information about the company and the products looks difficult.
The watch is not working and the overall condition is not so good, but it's a lovely timepiece. It's quite large (38mm without crown) and the case is really full with the movement. I think it was the smallest possible size for a chronograph movement.
Same time I would like to know if I have any chance to find spare parts, because the balance wheel axis is broken and probably the main spring also.
I know it's difficult question, but is it worth to spend money on restoring?
Any help, advice is appreciated!
Thaks

Csaba Wittinger

[Eeeb]

As far as I can see, it looks like a Minerva... probably this family. (http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&a0&2uswk&Minerva_17_29)

One think I learned fixing cars is parts are always available. But sometimes the search for parts exceeds the rest of the repair time. And sometimes the cost of the parts are the major portion of the total cost. Often they can only be sourced from junked cars, er... uh... donor watches. :-)

The folks in watchmaking are probably better sources of ideas of where to look than us, but there is a lot of overlap in members.

If you are sufficiently skilled to do the work yourself, hang around - we have need of your expertise!! If not, the quest for a watchmaker is your real concern!

[JimH]

It's a Landeron movement.