variant

Does anyone have definitive information as to exactly when the H-4 variant entered service with the Luftwaffe ? In various books I've been studying, this variant is shown as entering service, or at the very least replacing the H-3 variant in production, on periods ranging from '..early 1940'...

Another one from the cabinet. Build many moons ago. THis kit was bought at a model show simply because I never saw the "S" variant of the Ju 88 before. After purchasing some refference books, I soon realized how bad this Hobbycraft kit is. I won't go into the details, but there is a LOT wrong...

So I've recently learnt that there have been many WW2 aircraft that were either built as one variant but then later converted to another variant, or ordered as one variant but switched to another variant at some point during construction. The end result is usually an aircraft with a bunch of...

I've been looking into the history of Spitfire MH434, and I'm trying to figure out whether this aircraft was built as an IX variant or whether it was built as another variant and later converted into an IX. On a related note, I have been able to find the construction number for this aircraft...