Don, metal dials finished with thin, unprotected gold or silver plating for early 20TH century US watchmakers all suffer easily from the corrsion of the copper-based substrate "telegraphing" through the decoratvie plating. Gently clean the dial wby hand in a solution of dish soap and warm water and if the dial remains "dirty" looking you either have to use it "as-is", find a better dial (hard for South Bends), or send it to International Dial Co. in Ohio who will re-plate it and print some sort of new numbers and the maker's Name on it for you.
Posts: 6492 | Location: Southern California in the USA | Registered: July 19, 2007
I have done a few South Bend watches for a friend who had me send them to International dial company because the dials were is so poor a shape it was hard to read some of the numbers. One of the dials was a cream/golden color background that came off but left the numbers in place when he tried to clean it. So be careful if this is what you are describing. I was pleasantly surprised how they came out. The numbers looked almost the same as the numbers that were visible before the work was done. This was the budget refinishing. I understand that they have a service for collectible watches that will make sure that everything is exactly as it was on the original. I have a few Illinois 12s watches that I will be sending to them because of the work they did. But they are beyond saving and better a refinished dial than one that is half gone.
I also came across this post in the clock repair section. I have not tried the method, but I would be very careful when doing it. Perhaps try it on a spare dial that is already ruined if you have one.
Posts: 1143 | Location: Chicago, Illinois in the USA | Registered: September 05, 2010