Category:Master discs

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Media in category "Master discs"

The following 2 files are in this category, out of 2 total.

Feature. Gold Sputtering Original Record BAnQ P48S1P10519.jpg 960 × 713; 69 KB
Mother record, 1935 - Museum of Science and Industry (Chicago) - DSC06661.JPG 3,379 × 3,162; 5.93 MB

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