Played it at Chassis Arcade in Copenhagen, and apparently, the owner, Laust, is a beast at this game with a world class hiscore of 1,785,830. I can't remember if I ever tried this machine as a kid, but it sure is a lot of fun to play.
Got the score 89900 in MAME.
Played the first 5-6 levels at Chassis Arcade, pumping 2-kroner coins into the machine at a regular interval, hoping to maybe finish the game. As it turns out, 1943 has 16 levels, which would take *a lot* of coins to complete.