Anyone heard of a automatic watch that COMPLETELY stopped working?

[MBEECH]

Hey all,

I recently purchased an automatic watch from a reputable 2nd hand dealer.When it arrived it seemed to be working perfectly and keeping great time. To be sure of its authenticity I took it to my local watchmaker, and he opened the back and confirmed the movement was real and original. Within an hour of him checking it out the watch completely died, as in it won't beat at all or start to keep time, even after winding it and wearing it. I've had automatics keep poor time but never stop completely and be unable to start again!! Does anyone know what could be the issue at hand? Did the watchmaker perhaps accidental upset the rotor or something? The dealer says the watch was serviced before he sent so it shouldn't need one already plus I've just never seen an auto act so bizarrely. Any insight would be appreciated!