That's a tough one, I wouldn't know. The radiant red is sharp, vivid and doesn't appear to have UV decomposition, but does 1960 have this prob, IDK.
However, That tank could be more valuable than the whole bike. I mean, it looks (in your photos) actual NOS (New old stock) Mint. Not a scratch, no chips nor marks at the screw holes And Mint tops the list in valuation. The tank pops this bike but, as value goes, I wouldn't mount it on it. B/C, if value is an issue then your highest bidder would be whoever owns a mint bike to match it. Or a collector who's only interested in top condition parts. Mint valuations can exceed near mint by 2 time the money