Hannover CL IIIa lozenge and markings

[Squiffy]

Afternoon, chaps.

I have an Airfix Hannover in works and the lozenge that I bought for it is the 4-colour type from Aviattic.

My question is: was 4-colour lozenge later than 5-colour and would a kite with 4-colour be seen with the Iron crosses, or would the crosses have to be balkenkreuz to be authentic with4-colour?

Thanks

[Squiffy]

Thanks, Richard. So if 4-colour wasn't around until spring 1918 then, I guess, I need the later crosses.