Today it's 1990's Fuhai Tea Factory '7532' from essence of tea.
The first infusion (after the rinse) was too musty for me (and I normally have a soft spot for "old" tasting teas...but this was too bitter. yuck.)
Happily that is fading with the next infusions. But the tea brews very dark. It tastes just as aged as the 80s and even the one 60s tea that I had. Time isn't the only variable.
I took a peek at the leaves in the pot, they still have much of their original form though the tea is dark.
This is not a sweet tea, though the bitterness in it (now that the initial bitterness is gone) is like the bitterness of very dark maple syrup-- and yet not sweet at all. (did that make any sense?)
It has very little aroma.
There is a very lovely after taste, the after taste is better than the taste. I find I take a tiny sip, the just sit and enjoy what lingers.
Now on the 4th infusion what was the after-taste is the taste of the tea itself. Again it's a dry, subtile tea-flavor, something like maple tree bark or maple syrup but without any sweetness.
On the early infusions I was worried I would not like it. Now I really do. Something about it makes ones nose a little warm and tingly. You find yourself in that nice place where tea can take you.
In the end I like it!