Joined: Nov 2006
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From: NJ, NYC, LI
Bikes: 1940s Fothergill, 1959 Allegro Special, 1963? Claud Butler Olympic Sprint, Lambert 'Clubman', 1974 Fuji "the Ace", 1976 Holdsworth 650b conversion rando bike, 1983 Trek 720 tourer, 1984 Counterpoint Opus II, 1993 Basso Gap, 2010 Downtube 8h, and...
Where things have been brazed on, the chrome is presumably ruined. It may still be good on the lugs, but I think you'd see it in more places than you indicate.
Paint does not generally stick well, over chrome, and your paint is 30 years old and not too scratched up. This leads me to suspect the chrome was removed prior to the repaint.