'Lost' ball located 91 years on (2005)

on one of the first horizontal iron beams of a new suppermarkt, 3 meter up, sits a cup from a construction worker. I see him put it there. 8 years later it still sits there, in front of the window. The cleaners don't bother with it. Where would they put it? Bring it to the kitchen 40 meters away? Why bother?

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