Today I was at Offenbach Ost station with my bf to finally remove the 2 old mini split-flap displays there. The DB employees then told us that they also still had a clock at Taunusanlage station. So we went there afterwards, checked out all the technical rooms, super cool and so many rooms! But the clock wasn't there. The DB guy called a colleague and it turned out that the clock was at the central station. So we picked it up there :3
