Guest amycats2 Posted January 26, 2012 Share Posted January 26, 2012 Hi, I have here a book of photographs documenting the process of making porcelain for the Champion Spark Plug cores. Judging by the cars and hairstyles in the photos, it's probably from the 1930s-1940s. Really nice large 5x7 black and white photos of the factory machines, etc...it almost looks like a book that was assmebled to show prospective clients or suppliers. I'm planning to sell it eventually and have no idea what it might be worth to a collector. Any help appreciated!Thanks!Amy Link to comment Share on other sites More sharing options...
ply33 Posted January 26, 2012 Share Posted January 26, 2012 Clothing and hair styles look like early to mid 1920s to me rather than 30s or 40s. Link to comment Share on other sites More sharing options...
john2dameron Posted January 28, 2012 Share Posted January 28, 2012 Maybe during World War II when Rosie the Riveter kept the factories going. Link to comment Share on other sites More sharing options...
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