Me 410 Markings 1944
 

On 27 Apr 44, an Me 410 A-1/U2 Wk Nr 420201 9K+ZP of 6./KG 51 but being operated by Stab II./KG 51 crashed in the UK. The intelligence report of the wreckage notes the code 9K+Z, the number 42 in black at the base of the tail but the number 750 black on a white background below 42 on the fuselage. Any idea what 750 referred to?