JEM60
I remember, at Duxford, not long before 2000, a formation of either 23 or 26 Spits. They received a special dispensation from the CAA to arrive from behind the crowd line. Haven't got time at the mo' to look it up, but it WAS an anniversary. Anyone else remember this??
There was a Spitfire 60th Anniversary celebration in 1998.
However, as far as I recall that was a 16 formation.