Developing Old Exposed Tmax 3200

A friend of mine has a roll of 35mm Tmax 3200 that was exposed perhaps 20 years ago. Can anyone suggest a developer and developing time that would be most likely to yield usable negatives in this situation? I realize that this film doesn't hold up well over time if undeveloped, but we have nothing to lose. Thanks.

HC110 at 65°F for reduced fog. What ISO/EI was the film exposed at?

HC110 at 65°F for reduced fog. What ISO/EI was the film exposed at?

 

Probably 3200.

I have used 20 year old unexposed TMZ, exposed it at 3200, and got visible, but otherwise not so good, results.

 

I suspect that 60 year old VP would do better. Here is one, and this is the whole frame, not a crop:

There are so many uncontrolled variables in the history of a 20-year-old roll of any film that it's always "iffy". I've used 20-year old Tri-X and Plus X. In my case the Tri-X yielded better though grainy (like glen_h's) results,than the slower film. Often the faster ISO films will deteriorate more in storage than slower films (or at least it seems that it should be that way).

 

Here is some Soviet film, expired about the same time as the USSR itself:

with the results: