unknown mechanism

Good afternoon, does anyone know the acronym ID of this movement and its reference period if possible? Thank you

Hi Lallo63,

i guess it is an IWC Caliber 412, produced from 1972 to 1974.

br Cromagnonman

Hi Lallo63

The excenter fine adjustment on the balance points to the Caliber 412.

-Cromagnonman

Hi, I reply to all of you kind that you have answered me, inside the case and on the outside of the case back there are the same numerical references that can be seen in the photos, also inside the case at 6 to 90 ° under the glass are replied by uncertain hand of the Roman numbers, precise that I have already looked at the IWC software, but there is no trace with the aforementioned serial numbers, I also made another post a few weeks ago, It concerned the model, it is practically unknown does not exist on the web, only 2 people in IWC could know what we are talking about, but I don't know if they still work there, it would seem to be a specimen produced rigidly by hand in just 50 specimens ... but I consumed my eyes on the web ... and I have only been 4 years old I have it in safe ...

i have made also some official documents about an old certification about IWC on 1997 ..... at some model with another ID number...by mr.  Rene Schwartz and mr. Heldi Pylzer or son on ... i hope someone can help me... thanks to all

thanks

Hello how I got to respond in generic form above, thank you for the interest and help, but above all there is a way to date this blessed clock? I also contacted IWC through the Whattsapp platform to request and payment and certify the originity but it has been replied that since it is not possible for the IWC to give a name to the clock, there are no parameters to be able to ensure it in transport ... I also provided a similar 1997 certification drawn up on the IWC headed paper that concerned a similar clock, the answer was that all the old teachers were retired and Iwc could on the basis of the photographs give indications on the merits .... a dog that bites his tail .... I want to pay to send IWC but IWC says it is not sure to be able to say that it is an original IWC and what, I have the evil of the head with other watches of another brand it never happened to me, can you help me? 

Good evening, you have been of a unique kindness, I had not really looked at there, and thank goodness that in the laboratory I have an electronic microscope of 1200 enlargements, among other things in the other side indicated by you in addition to the number of reference of the movement, there is also clearly written the model of the caliber, with a tiny C.412 I was able to compare the number of reference of the movement, crossed with the number of the body and the IWC archive was Britten beautifully, with esteem also of the year of production and sale .... now I just have to look for his evaluation and independently make an insurance policy and send him to Shaffausen to make his originality issued, then he will go to sleep with my other children .... not Iwc, but I am making a little thought to another piece that I saw in a market .....

sorry i forget insert number... it is 2238360

The date your IWC app has your cal. 412 produced in 1974 according to the serial number.