Wanted - Antique Brass Diving helmets or Kirby Morgan divers helmet in Phoenix, Arizona For Sale

Wanted - Antique Brass Diving helmets or Kirby Morgan divers helmet ?
I am looking for original Antique or Vintage Brass diving helmets, and Kirby Morgan diving helmets.
Sorry, I am not interested in replicas or miniature copies. Only looking for the REAL thing.
I love deep sea diving helmets !!
Enclosed are some photos of what I am after. Thank you
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helmet diving nautical scuba diver ocean atlantic maritime sea water old navy military usn pacific deep sea