For Sale: Carlton 531 62cm vintage road frame and campag road wheels

Hey, interested in the wheelset but have a few q's. . .

1. What spacing is the rear hub? and what block/gears were on it?
   
2. Has it been dished for single speed? it looks from the pics of the wheels on the bike that it is running a single speed on it?
   
3. clinchers or tubs?
   
   

i'm after some wheels for my Carlton which originally I wanted to put 27's on but finding it difficult to get some nice/light wheels. As i'm new to the game I don't know how much these should cost so I a) don't want to insult you by offering a stupidly low price, or b) offer way over the odds!

so any idea of a ballpark figure?

Cheers, Steve