This is a recently acquired Ruhla calibre 24 made which was made between 27th April - 3rd May 1964. The dial was somewhat discoloured and so it became another candidate for some citric acid solution treatment.
Before (left), After (Right)
The finished product. The background is from a book which was a promotional book for the 15th Anniversary of the GDR in 1964. The article is entitled "Order at our border". This was less than three years since the Berlin wall was built. The photo shows US Vice President Richard Nixon having his passport examined by an East German Border Guard as he crosses into East Berlin to meet ordinary GDR Citizens. There is more information about Richard Nixon's visits to East Berlin on the Richard Nixon Foundation Website: https://www.nixonfoundation.org/2014...lin-agreement/
Yes, this result was through the use of a citric acid solution. It doesn't take a lot of citric acid crystals or time to get the result. About 10 to 15 minutes work.
The wording changed from "Made in Germany" to "Made in GDR" in 1973 when the GDR was recognised by the United Nations.
There are more details about technique and quantities in the following post in this thread.
A clean design, white dial like this is always a good challenge, but also very rewarding when you achieve a result like this. The Ruhla dial seems to be of excellent quality, to allow for such a clean without any loss of print or paint.
I didn't know DDR got printed so late!
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