From a tasting of Noval Colhieta from 1937 to 1986 in the Noval shop in VNG on 30 Sep 07 - see review here
My less than comprehensive note says "Light and slightly bitter". This was almost universally declared as being weak but I found it to be a pleasant drink and placed it 4th out of the 7 tasted.
1968 Quinta do Noval Colheita
1968 Quinta do Noval Colheita
"The first duty of Port is to be red"
Ernest H. Cockburn
Ernest H. Cockburn