Bear in mind a couple of things:
- Bacon's info is incomplete and shaky re the preunit Spitfires, especially
prior to 1959 models. This is because there was simply no good info published
anywhere except in the USA at that time, and Bacon had precious little to go on;
- The Despatch Record as was available after the Factory's demise is very
poorly written, literally. It's hard to imagine some of the crude, scribbled
entries as having been made by a manufacturer as prestigious as BSA. The writers
thereof seem to have coined their own choices of names if they weren't otherwise
told which ones to use.
- Absent any other, more-accurate and official record, this is what we have
to use.
David