1969 (03) Concorde - GPO - Filton FDI - Doubled in France on the 20th Anniversary

Lovely GPO cover with the full set cancelled by the usual Filton FDI, but then 'doubled. in France on the 20th Anniversary...

Appropriate French 2.20f Stamp and a Concorde Cancel.

Don't see this one very often!

Code: 51903