That's going to be a fantastic bike!
A 600 series bike is going to be up on the food chain- for a long time, I would have KILLED for that 531 logo. The forks look to be the Ishiwata version of Mangalloy- I had a Trek 420 that was all Mangalloy and it was a great riding bike.
What are your plans for the bike? Keep it all "vintage-y" or change and upgrade what you feel is desired or necessary?
Congratulations on the bike- it's got all the elements of a desired "classic Trek!"
__________________
*Recipient of the 2006 Time Magazine "Person Of The Year" Award*
Commence to jigglin’ huh?!?!
"But hey, always love to hear from opinionated amateurs." -says some guy to Mr. Marshall.