This is Erich Heintze(1916-1998) He was an RKT. Erich is standing behind his friend Wilhelm Hübner, who was an RKT, and KIA. I have circled his signature, because it didn't scan well. and placed an yellow X on Erich's image. This foto is large - approx. 12.5cm x 17.5cm. CLICK THE IMAGE TO SEE IT BETTER.