I have a last can of Ilford HP5 Plus aerial 70mm x 30m unperforated film - 3 years beyond the expiration date. No apparent problem with that stuff so far. Since it is compatible with my Graflex RH50 back only it would be nice to try the new, fresh batch with type II perf. with my Hassy 70mm backs.
Martin, I would be interested in one can of HP5 and FP4 type II perf. 70mm films.