Any theories as to the origin of the picture then?
And is it possible the listed date may be wrong because the date was set incorrectly on the camera itself?
It's quite possible the date and time on the camera are incorrect. Whoever owns the camera probably didn't realize that information got stamped transparently into the data of the image itself. I have no clue when the camera was made, all I know is, by Googling the info, the manufacturer is in Russia, and that the camera is a 3.1 MP camera.