Trains - Bahrain to Bolivia, specialized collection on black stock pages incl. Bahrain, Bangladesh, Barbados, Barbuda, Batum, Basutoland, Bavaria (mint singles and blocks of railway revenues), Belgian Congo, Belgium (extensive railway stamps, B holding proof, SSs etc.), Belize, Benin (extensive SS incl. set of 9 SS 2003, 2006 set of 6 SS, 2006 two sets and sheetlet, 2009 SS, 2014 Harry Potter SSs, 2015, 2016, 2017 etc.), Bhutan, Bolivia (unissued), etc. Specialized holding.