So here's something that has popped into my head as of today. Every camera does different time stamping if you enable the setting, and I don't know if there's anyone really documenting and displaying that information anywhere. There's varieties of fonts, colors, and positions.
It's not particularly an important thing, but it is something which has been on my mind today. Here's a sample of 3 of my digicams and their differing time stamps. You could say I have a stamp collection now, although not that kind.