2 posts... and already getting antsy.

It's not rocket science. You have the bike in front of you. If you can't see the number, there's none.

I've had bikes where the serial was on a sticker, that was either really easy to remove, or that got erased very easily when you used any solvent based cleaner on it.

The 7 would point to the bike being manufactured in 2007 is all I can say.