help in finding vintage

[Frank S. DiBella]

I have had a bottle of Bolla Amarone "Cantina Del Nonna" 14% (bottled in Verona) for many years. Unfortunately, the vintage date which was glued on the top of the bottle cam off. Therefore, I have no idea of the date except I remember purchasing it on an Italian liner during 1970/71. There is a number inglossed on the lable "69670". Can you advise how I can confirm the vintage date and do you think its worth holding, drinking or selling?

Thank you,

Frank DiBella
Susan38862@aol.com