Issued in 1991 by La Poste, this French commemorative stamp celebrates Journée du Timbre (Stamp Day) with the theme “Le Tri Postal” — the postal sorting process. Designed by P. Cambolin, it features a modern postal sorting center and mechanized mail distribution, symbolizing the evolution of France’s postal technology. The denomination 2.50 + 0.60 francs includes a surtax for philatelic and postal development funds. This issue reflects the modernization of La Poste during the early 1990s, marking the bridge between manual and automated mail handling.