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4/16/2020 9:08 PM <dir> Master nr. 268
4/15/2020 11:07 AM 64841 Riefler 3.4 sec pendulum.jpg
4/15/2020 11:07 AM <dir> Riefler astronomical regu
4/15/2020 11:07 AM 274751 Riefler Master clock nr. 142.JPG
4/28/2022 8:34 PM <dir> Riefler no 480 in cast al
4/16/2020 9:43 PM <dir> Riefler no. 331 of 1912