[Chris Goss]

Think I have come to the bottom of this. In a full K report dated 5 Jan 44:


"Staffel colours are no longer used in I./KG 2 but that white rings, some 5-6 cms wide, are painted around the fuselage aft of the tail unit. One ring denoting 1 Staffel, two second and three the third. In addition to these rings, there are markings on the rudder to denote the individual aircrfat. POW had C-2-K on his aircrfat, the letters CK being the last two of U5+CK and the 2 which was larger that the letters denoting 2 Staffel."