51 selected
- Not filled in
- M&M
- Maas
- Maastricht
- Madeleine
- Maine / New England
- Maj
- Malaga
- Manoir
- Manon
- Marca da Bollo
- Margaretha
- Maria
- Maria-Theresia
- Marianne
- Marie Louise
- Marines
- Marion
- Marjo
- Market
- Marlborough
- Martha
- Masterpieces
- Mayfield Ruby
- Mayflower
- Medley Vicenza
- Melkkan
- Memory Lane
- Merison (AH)
- Michel
- Michelin
- Mickey Mouse
- Miffy
- Mignon
- Mikado
- Militaire
- Milles fleurs
- Mist Rose
- Mobilization series colored
- Model H
- Model unknown
- Modest
- modica
- Molens
- Monbijou
- Mooi Nederland
- Moonlight Rose
- Mosalite
- Moss Rose
- Moulin des Loups
- Moustiers
- MZ Altrohlau CRM