It could well be one of the two gigs that's on this website, 1973. Philly or Largo. Did Pete intro Pinball Wizard as "Pineball Blizzard" for a laugh? If so then it's Largo 12/6/73 if not it's Philly 12/4/73

Also, have you heard the full length My Generation on Live at Leeds, (particularly from when My Gen seems to be over) something tells me you'll like that, a lot!