This aircraft is only known from entries and a sketch in Iwomoto’s journal, and is one of three he flew from Rabaul which displayed kill markings. Researchers have been trying to determine the manufacturer, model, and markings for these aircraft, but only one rather fuzzy photograph has surfaced publicly thus far. Tetsuzo Iwamoto survived the war. His personal diaries record 202 enemy aircraft claimed, historians have put the actual total at 80.
More Zero aces completed models here: https://inchhighguy.wordpress.com/2021/04/13/hasegawa-mitsubishi-a6m3-zero-of-shoichi-sugita-in-1-72-scale/
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