This is the 2004 Hasegawa He-111H-6 kit updated to H-20 configuration. The model represents the aircraft of bomber “ace” Oberleutnant Dietrich Kornblum, Staffelkapitän of 4./KG 53, located at Piastow, Russia in June 1944. Kornblum was awarded the Knight’s Cross after completing 400 missions. The aircraft has been overpainted with RLM 76 “clouds” and black undersides over the standard Luftwaffe RLM 70 / 71 splinter scheme. The dorsal turret transparency was formed using the “plunge mold” technique.
Construction posts here: https://inchhighguy.wordpress.com/2021/01/15/hasegawa-heinkel-he-111-build-in-1-72-scale-part-i/