2005 Henri Giraud Grand Cru Ay Blanc de Blancs - Champagne Grand Cru - 1 Bottle (0.75L) - Catawiki
Muselet - Wikipedia
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COTEAUX CHAMPENOIS – Red & Still Champagne, Really? - Joanie's Wine Blog
Wine Cru Reviews - This is a staple closure (agrafe), which was used before the modern cage closure or crowncap was invented. Some wineries still occasionally use them as a throwback (