I always hate it when a bottle is corked. 1970 DDC has been consistently excellent. This one not so badly corked, that we had a sense of how good it could have been, at least the beginning, before the nastiness overwhelmed.
Having the 1983 as a backup is not a bad substitute. It’s still amazingly young, with wonderful Graves aromatics of tobacco, leather as well as fruit, and the beginning of tertiary notes of earth and leaf meal.