Keep in mind that over the years many of these tops have been replaced. If your top has a single seam running down the center, it has been replaced. All factory tops had two seams nearer the roof edges. Some aftermarkets did also. All the vinyl top cars I had that were original had the gutters filled with RTV silicone sealer angled down toward the roof so they would still function as a gutter. The only one I took off had very little body color over the primer, mostly just an overspray faded from the point of the moulding. That was a '66.
1967 Shelby GT350 4-spd #3014 Concours Gold MCA and SAAC
1965 K code Fastback owned since 1977- MCA Concours Gold
1966 6-cyl. A/T Sprint Convertible owned since 1978
1966 C-code A/T Convertible restored 2008. Exercised regularly in season!
1965 C-code A/T Convertible resto completed May 2015
All owner-restored in my garage, never trailered.
MCA #2254 1964 1/2-66 Concours Judge