I would be interested too in getting VFETs from Francesco in order to increase the parts population for the matching project (here and here). When I wanted to buy his parts I asked Francesco to provide some sort of test data to illustrate that his parts are in working condition. Unfortunately, that never happened. Oh well.
I have four quads of 82/28, one of them I bougth to diyaudio for the second edition of papa, and another matched quad, paired with exactely the curves and the polarization points between p and n channels units-I know maybe a bit much to ask but do you have a matched pair 2SK82 available still? Need a perfectly matched pair 2SK82 E or D rank.