I'm restoring a bike with almost complete 7402 Dura Ace components. Except the chainrings are a rather ugly set of salsa 53/39 rings. I'm looking to get the correct chainrings, or at least ones that look correct.

Is there any difference between Dura Ace 74XX rings and 600 64XX rings? I wouldn't mind saving a little money.

As a follow up, how about between 74XX/64XX and 77XX/67XX rings?