plane documents freiburg

Hi, All, I looked back at an older post on the forum in regards to my main theme: Egon Mayer and January 7, 1944. One of the members, Vanir, (now banned) had given me Egon Mayer's A-6 werknummer as 470468, and stated it had 6 x 20 mm, and that it was the plane he also flew when he was killed...