So very fresh in the nose!

Remarkably fragrant and youthful for 50+ years. While obviously recorked the capsule seems authentic.

Who knows about the wine, maybe topped off with new wine?

Sadly I don’t recall where this bottle came from.

a long lived vintage so could be all 66 but the condition of the cork probably means a blend.

Cork came from Marin and at best this wine had been topped off at the time of recorking.

From good bottles this is a pretty vibrant wine in my experience so your bottle doesn’t sound like an outlier.