When did the copper plating start on 30T2s? This one is serial 10292864 which seems early enough, but in the picture it looks like the plating was removed and the wheels are the wrong color.

And now that I look at it here I notice that the out of focus screws don’t look very good.

 

Here is one of mine 30t2 - 10 mill range

 

I'm guessing that copper plating started post-war ('46ish?) as copper was a precious resource until then.
Regarding screws and such, I think your lighting is casting harsh shadows and with a few rums you'll see that "all is well'!
It does appear that the beauty pictured has had her bridges brushed, removing the plating (note the copper color of the fonts). I bet her backside might give us a clue!

*Not the first time I've asked to see a backside.

 

@UncleBuck Backside inside and out. I could be ok with it because they dial is very nice, but the price is a little optimistic.

 

I meant backside of the bridges, perhaps that's what you meant but the caseback photo's you post makes me think there may be a misunderstanding.

I mistakenly thought that you owned the watch.

 

no, I don’t own it, was considering acquiring it as consolation for missing on a beautiful Polerouter because I was trigger shy.

 

Are you talking about the ovni I saw yesterday with broad arrow hand?

 

The movement is totally OK as it is shown in the OP

The copper plating was definitely not stripped!

There are late movements with nickel plating ...

And it is totally legit that the inscriptions are copper coloured, they are matching the colour of the countersink.

There are so many versions of the early 30 mm movements, you will be surprised.


BTW the movement is in nice condition

 

Aren't the nickel ones usually more shiny?
What threw me was the appearance of a grain or brush marks on the finish. .....hard to tell with fuzzy photos

 

the movement is very shiny

Yes, there must be a graining/brushing pattern on the surfaces of plates and bridges

Actually it is a very well preserved watch as far as it can be judged by the not so clear photos

Be aware that there is a significant overlap in movement serial numbers between nickel and copper coloured movements

 

I have to say that ^^^ was not the most elegant way/ring design to keep a movement in place...

 

I thought it was a rose-gold plating - it is called so in all the literature I have read so far, including the book of Anton Kreuzer, AJTT and a specific essay in Klassik Uhren about cal. 30 and chronometers...

 

Have you ever dismantled a watch with this spacer?
It may not look elegant but it works very fine as it holds the movement in place perfectly.

 

No, it had regular dauphine hands, cal 218-9 with very nice dial and case at a very honest price

 

Thank you @mac_omega and @gatorcpa, very helpful. I had read Franco’s articles but I didn’t remember the part on the early ones, thanks for the reminder.

 

nope! that's the reason watchmakers came to existence!

 

Thank you for the link. I try to improve my knowledge when ever I can.
It is very interesting but they state it is a tentative result about the alloy - do you know any newer source than 2001?

Concerning the commonly used expression rosegold plated: You may be right, most probably it refers to the colour and not to the content of gold - sounds logic...