In this auction we have the offer of original marathon birds of 

Jos Martens: children "Helios" - "Umberto Junior I" - "Hyperion" - "Cassanova"
Bours Peter: "De Perpignan" (89th and 90th National Perpignan winner) - children "De Perpignan" and "Pientje"
Aerens Daniel: children "Silver Wing II" - "406-18" (12th Nat. Barcelona) - "043-21" (7th and 76th national Barcelona)