Gents, thanks a lot for your input! A pity it wasn't KG6 i.e. people who possibly transferred from that unit to I./KG66, as I was hoping initially...(I'm still a bit light on the earlier period of I./KG66. As hardly anybody survived from that era to make it to the postwar Treffen (reunions), any pictures or names would have been welcome...)
With hindsight, a blessing in disguise that I didn't win this auction, then
Regards,
Marcel