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Lorenz Bob. PDArt DeutschesUhrenmuseum UTC DeutschesUhrenmuseum Flominator talktalk Lorenz Bob cropped rectified perpective contrast Joyborg DeutschesUhrenmuseum Ccbysa GFDL PDArt PDold original upload log This image is derivative work of the following images File DeutschesUhrenmuseum with Ccbysa GFDL PDArt