I'm after any inter-war or WW2 US gasmasks, but particularly the M1A2, ND Mk III, ND Mk IV, M2 optical post-war version, M410A1, M2 noncombatant, NC1, and M3A1. Condition required is fair to good and must have carry bags and filters.
Also, bit of a long shot, but I'm after the contact details of the guy who was selling a lot of French/Dutch/Belgian masks in the grey carry tins at this years show. He had a quite nice British invalid hood respirator too. Think his stall was on row D/E/F #25 or around A #60-80.