f300Hz, some questions

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Good morning,
I recently acquired a Omega f300Hz, from mid-seventies I believe. Movement 1250.
It was in a reasonable shape, but did not work correctly .. would gain 1h in a period of 3h .. erratically.
It went to my watchmaker who is not a specialist of this kind of movement, does not have the high resolution binoculars but he was able somehow to partially fix it !
Here it is


Now then, today the watch is working but it is not the accuracy one should expect from these movements ( I understand it should be something like 5second shift per month !). Actually, my watch is shifting ahead 15second/day (average). I manage to secure the correct 344 battery (not easy to find overhere).

There is the possibility to tune the movement

It seems you "only" need to turn these 3 prongs devices sitting on top of the serrated "bulb".
The problem is how do you do that ? The bulb can move a little and without an appropriate tool it seems difficult to turn the 3 prongs devices.
What kind of tool should be OK to use ?
Ofcourse I can go back to the watchmaker and that's probably what I'll end up doing ... but I would prefer to adjust myself, the way I do for many other vintage watches I have.
Thank you for your attention,
 
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I strongly advice do not touch this very special movement untill you really know what you`re doing.
For adjustment you need a special timegrapher for this tuning fork movements and 15s is out of the fine adjustment range anyway.
This movement needs a service from some specialist.
 
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Your movement was made from 1973 to 1979 so you`re lucky that it is still humming 😀 nice watch BTW.
 
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Thank you for this information .. Î’ll follow your recommendation .. I have the coordinates of this firm in the UK that specializes in these movements .. trouble is that because of brexit we are now subject to entrance taxes ..
 
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Rob Berkavicius does an excellent job to service these watches at a reasonable price.
It's not a garden variety watch. Most watchmakers do not have the experience or proper tools to service it.
 
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Rob Berkavicius does an excellent job to service these watches at a reasonable price.
It's not a garden variety watch. Most watchmakers do not have the experience or proper tools to service it.

I second Rob B. He fixed an f300 for me and even rebuilt the coil. I don't know of anyone else who does that.
 
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Thank you gentlemen for this very helpful information ! I will certainly contact Rob Berkavicius .. I visited his site that seems to be THE accutron site ! I have not yet understood/determined where he is located ... I must be careful as the customs here in Belgium are like sharks .; it costs more than 30% of the value to get something in the country unless it would be within EU. I will inquire about a reparation ..
Again, it is so nice to receive the help of the fellow members !
 
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... I must be careful as the customs here in Belgium are like sharks .; it costs more than 30% of the value to get something in the country unless it would be within EU. I will inquire about a reparation ..
Again, it is so nice to receive the help of the fellow members !
As a fellow citizens... I hear you. Our customs have loads of appetite, and don't seem to ever be satiated! I bought some straps for 97€ out of the EU, paid 31€ taxes...
Good luck on your repair, I unfortunately don't know any watchmaker around here who could help. You could give a call to the Artisans du Temps in Brussels, and check with them. They have a good (and expensive) team.
Edited:
 
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As a fellow citizens... I hear you. Our customs have loads of appetite, and don't seem to verbs satiated! I bought some straps for 97€ out of the EU, paid 31€ taxes...
Good luck on your repair, I unfortunately don't know any watchmaker around here who could help. You could give a call to the Artisans du Temps in Brussels, and check with them. They have a good (and expensive) team.
Thank you ! Will do !
 
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Thank you gentlemen for this very helpful information ! I will certainly contact Rob Berkavicius .. I visited his site that seems to be THE accutron site ! I have not yet understood/determined where he is located ... I must be careful as the customs here in Belgium are like sharks .; it costs more than 30% of the value to get something in the country unless it would be within EU. I will inquire about a reparation ..
Again, it is so nice to receive the help of the fellow members !

He is an Australian living in Thailand. He is really good dealing with Thai customs and mail service. He gives you a customs label written in Thai.
 
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When you send things overseas for repair and return, they're supposed to be exempt from customs duty, but you have to label them properly.
 
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Thank you for this information .. this site is very very interesting ! Seems like they are the specialists that I need .. unfortunately, I will not be able to deal with them because I dont want my watch being subject to our psychopathe customs guys we have here .. it would cost me too much money only to get my watch back ..
 
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You could try Paul at electric watches, he is UK based with all the hassle that now entails but if he is taking work (not always the case), is IMO the go to guy for hummers in the UK, Western Europe even:

https://electric-watches.co.uk
 
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When you send things overseas for repair and return, they're supposed to be exempt from customs duty, but you have to label them properly.
Well yes in theory .. I went through the procedure, trying to secure the right documents that I needed .. these documents must be delivered by a transport company .. I did not find one to do the job for a watch .. or if they did it it would be for a prohibitive cost (more than 200.€)the fellow in the customs administration then told me I should take my chance ... but if unlucky, I would pay the duties .. that's when I gave up !!! and before you ask, I am sitting in Belgium .. lot's of beers but shitty customs
 
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You could try Paul at electric watches, he is UK based with all the hassle that now entails but if he is taking work (not always the case), is IMO the go to guy for hummers in the UK, Western Europe even:

https://electric-watches.co.uk
Yes, thks .. I am in touch with him and with another fellow in Germany
 
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Well yes in theory .. I went through the procedure, trying to secure the right documents that I needed .. these documents must be delivered by a transport company .. I did not find one to do the job for a watch .. or if they did it it would be for a prohibitive cost (more than 200.€)the fellow in the customs administration then told me I should take my chance ... but if unlucky, I would pay the duties .. that's when I gave up !!! and before you ask, I am sitting in Belgium .. lot's of beers but shitty customs

Typically a watch being returned after servicing outside the country would not be exempt from customs duty.

The value for customs purposes would not be the value of the watch, but the value that was added to it while it was out of the country. This would be the cost of the service performed.

When I service watches from other countries I identify the value for customs purposes as the value of the service, so that if I’m servicing a $35,000 Speedmasters for example, the customer only pays on the charges for my service, which is a few hundred dollars.

I don’t know what the hurdles are that you are experiencing, but if you would like to see the forms I use send me a private message.

Cheers, Al