Exactly, and this term is misunderstood a lot. When you find a typical 70's owner built up race frame like a Bob Jackson, etc. built with a Campy drivetrain, a Sugino Mighty crankset, and Dura Ace brakeset. This bike is completely "period correct". But some guys today would not be able to leave it alone because it's not all Campy. But the mix of "period" parts are probably a better reflection of most regular guy race bikes from the time. "Do you want to race your bike this weekend or spend all your gas and lodging money on Campy brakes".

Does it bug me when somebody takes that bike today and pimps it out in better period parts? No, because if he could have afforded them at the time he would have bought 'em. What bugs me is seeing an otherwise original 70's bike wearing Cinelli splash cork tape.