Mark12,
When you say “It is quite a revelation”, you seem to be refering to the serial of one of the Spitfires involved. It must be known which Spitfires they could potentially be.
I’m sure if you know what it is, you can’t say until the book is released, but here’s a few possibilities:
1. It’s a Spitfire with history, maybe flown by an ace.
2. It’s a Spitfire that shouldn’t have been in that part of the world
3. It’s a mark V with a mark IX engine added
I shall be looking forward to the book’s release