That's what I was thinking, worried that those might be original old tires and maybe even those awful Panaracer Radial tires.

Bikes don't handle right with radial tires on either the front or the rear wheel.

But cool bike, what's the top tube length?

I recently found a Univega Specialissima that is a close relative to the 1000 but with AGC450 caliper brakes. It turned out to have fairly slack geometry and only a 55cm toptube in the 57/58cm frame size, so I won't be riding it.