KZ5QRN 1973 Canal Zone

The operator was Mark Michael Schimmenti, U.S. Navy, KZ5QRN and WN6BBC, later WA6BBC, KZ5QR and possibly other call signs.
He was born April 19, 1952 in San Diego, California.
He is now living in W4-land, but I have not found a different call sign for him. W5KNE

When I was KZ5BP and one of the ops at KZ5NG (1973 - '75 during my Navy days), Mark would visit the Ham Shack often. 
He badly wanted to get his ticket but he could not get a KZ5 callsign without having a USA license.
So, he took some leave, went home to CA, took the Novice test and was assigned WN6BBC.
Upon his return to the Canal Zone, I suggested to Mark that he request KZ5QR for his Canal Zone callsign.
The KZ5 rules stated he could have any unassigned callsign however, if his USA license class was Novice, he would have to append an "N" to the assigned callsign until he upgraded.
Hence, Mark was assigned KZ5QRN. To my knowledge KZ5QRN is the one and only Q-signal callsign ever assigned.
You can imagine how popular he was on the air. K4EU

QSL courtesy of K4EU
Info courtesy of W5KNE, K4EU