Wipe off the rear hub. Look for a two-digit number. That's the year it was built.

What color? If it's the old '60s black finish, that's oil paint. You can shine it up with some old car oil (or veg oil, or grease from your hair, or whatever...). Anything missing (mudguards, chain guard, etc.)?

Good price, if it's in good shape. I paid $15 for a Sports at a yard sale a coupla years ago. '75 silver, women's frame (bought it for my wife).