Official difference between the G-10 and K-4 windscreen??

[ArtieBob]

If one believes the C-AMT monthly reports, ALL of the G-10s coming from Messerschmitt, Erla, etc. were Neubau. As often, the devil was in the details. IMHO, I believe the drastic production changes instituted during the summer of 1944 had much to do with some of the apparent anomalies. The time between first metal being cut and BAL acceptance of an aircraft was probably months, not weeks. Also, the final assembly subtypes probably were driven by engine availability. Thus a fuselage that may have started in the cycle in 1943 might not fly away until well into 1944. I have seen photos of rows of new 109 fuselages sitting in open fields. A new airplane may have been assembled from new components that for various reasons had been in the production inventory for an extended period, such components may have been modified along the way, even to the point of having W.Nr. or subtypes changed. As for going from photos, unless one knows the history of the specific airframe, drawing generalized conclusions may be fallacious as IIRC, there literally dozens of sites that were involved in Bf 109 Umbau and repair. In the last year of the war with the emphasis on numbers of aircraft sent out the door, I suspect there were many "unofficial" Bf 109 configurations flying , i.e. not in accordance with Messerschmitt "production standard". Just my take, of course I do not pretend to be an expert in this matter.

Best regards,

Artie Bob