I have a Junghans J-30 clock and would like to know when it was made for sure, Based on my research it could be a an early fourth model (1941) with a fifth model (1942-45) face or a fifth model with a forth model stem. It appears to have a low serial number of #8095 on the mechanism . Is there any source of serial numbers by year of manufacture or any other way to accurately determine the year of manufacture. I have read the posts on the Forum but they do not provide a wat to determine the exact year of manufacture. I realize that many J-30's listed for sale are put together from post war parts. Any information would be appreciated.
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