G.-H. Mumm et Cie GG.-H. Mumm et Cie F-51100 Reims · Champagne Kontakt 29, rue du Champ-de-Mars F-51100 Reims +33326774069 The firm was founded in 1827. Weine M Mumm Mumm Grand Cordon · Champagne M Mumm Mumm de Cramant · Champagne