Since my original character also only starts from level 55, I can only turn back to my memory on this topic. I reached max level at around the time AQ released and I started in September 2005 which makes it around 4 months.
Unfortunately it doesn't have my history before level 60 but holy crap, seeing my old guild name from my first level 60 is pretty insanely nostalgic. Completely forgot about it.
Anyone else a veteran of <Heroes of Salvy> on Hellscream ? lol
Oh neat, i found my dad's old guild history there.
Weird, my original character isn't logged on here, only my alt w/ the same name.
I apparently hit 60 on February 12, 2005. I remember that I was the 4th horde character on my server to hit 60... we had like 80% alliance 20% horde and it was low pop.
I'll probably hit 60 sometime in November.