Issued in 1969, this 0.45 franc French definitive stamp beautifully depicts the Porte Sainte-Croix in Châlons-sur-Marne (now Châlons-en-Champagne), a fine example of Renaissance architecture spanning the Marne River. The intricate engraving by Pierre Gandon captures the fortified gatehouse with its conical turret and patterned roof tiles, reflecting the historical charm of this Champagne city. Designed by artist Pheulpin, the stamp belongs to France’s regional series highlighting architectural heritage from across the nation. A must-have for collectors of French architecture and regional landmark issues.