Easy way to spot a re-pop is look at the quality of the parts, REAL VINTAGE is built to last, most re-pops look like walmart bikes, (built to be functional and look decent for 5 years). Old schwinns will have smooth brazed frames newer re-pops will be welded. If it has allen head bolts, such as a allen head bolt that tightens the stem, it's a dead giveaway of a re-pop. look at the chrome, newer bikes won't have the same quality chrome as an older one. If you see the chrome flaking off it's probably a re-pop. Another giveaway is look at the spokes, if they are stainless they are not old wheels.