Excuse me Terry Breedlove
I have treated many out of date films and some of them long ago expired ones (almost 60 years - since expired - the most, and in colour), however in the vast mayority I had the chance to expose them as well, not only for development (I suposse that latter is your case).
I am wondering should I try to develop this myself all I have is D76 or send it off to a lab. Any tips for development times would be much appreciated.
Yes, you should try and if you have D76 much better, cause it's always better use an "universal" developer, to reduce the strength of the reducer (not the efficiency) in this kind of status. I would also wash the film previously (not only to clean, but to fit it out) and I'd use the lowest possible temperature to work with (65/68F).
Time? It's hard to tell, specially without knowing how the whole exposure/film conection stage was interpreted, but even with that in mind I'd only adjust it to that temperature and leave the rest as you normally use a standard procedure. I would not (never) use a stand development, although a gentle manipulation & agitation/inversions must be considered during the entire process. I would avoid the use of an acid SB as well, only water. And I'd would shorten the fixing time (learning by observation) or use the normal time but in two separate/equal parts. Shorten should also be the final wash and Be patient when drying and flattening the film.
Finally, a previous test strip is always welcome and pretty recommendable.
I bought an old Kodak Brownie camera a couple of years ago now and inside was a roll of Ansco all weather film. It was shot and sealed up just like you see it here.
Couple of years with you, without open it? I don't understand this very well, anyway, Which Brownie is it?
Of course, take all these words only as my humble opinion, only what I would do if I were you, with that film on hand.
Good luck!