Bike Mayhem 2

Girlfriend and I were in Hyde Park yesterday, stopped by a water fountain to quench our thirst and right by it was a combination lock (no bike attached) sort of just sitting there; figured I might as well give it a try while she was a-sippin'. And, whaddya know, within 20 seconds I'd popped her off. Madness! This one was numbered 1904. I don't know how I do it. Still, had no interest in nicking it - thinking owner most likely returning - so what I did was put it back in a slightly different place, coiled rather than hung loose, just to give them a little mind-swizz when they came back. What is this weird magnetic power!?