The sequence of countries in Part 51B followa, covering regular postage, semi-postal and air post issues (excluding souvenir sheets) for2015.
- Laos   - Latvia   - Lebanon   - Lesotho: On Hold   - Liberia: On Hold  - Liechtenstein   - Lithuania   - Luxembourg   - Macao   - Macedonia  
- Madagascar   - Malawi   - Malaysia   - Maldive Islands: On Hold   - Mali: On Hold   - Malta   - Marshall Islands   - Mauritania   - Mauritius: On Hold  
- Mayotte: On Hold   - Mexico   - Micronesia   - Moldova   - Monaco   - Montenegro   - Montserrat   - Morocco: On Hold   - Mozambique

SCOTT INTERNATIONAL - 2015 51B SUPPLEMENT (PART 2) is categorised STAMPS / SUPPLEMENTS and sold by l'Imaginaire, a store and specialised website.