CH 2004 AE 2 yellow easter wishes French, small sheet MNH

Switzerland 2004 campaign labels, yellow easter wishes - self-adhesive label,
AE2, Easter Greetings French "Quelqu'un a été plus rapide que le lièvre. Nous vous souhaitons de joyeuses Pâques - LA POSTE",
A-PRIORITY Valable le 07.04.2004, small sheet MNH with 5 self-adhesive labels,
(SBK AE 2, Michel -)

Hints:
On April 6, 2004, Swiss Post published full-page advertisements in various Swiss daily newspapers that on April 7, 2004, it would send 5 free A Mail letters in C6 format up to 100 grams as a gift to customers if they handed them in personally at the counter. This post was provided with a self-adhesive label that was only used on 04/07/04.