Washington / Montreal / London / Bristol / Vancouver / /
Company
BP / VF / BT / /
Country
United States / Canada / /
Currency
USD / CAD / /
Facility
Also Van Dam / /
IndustryTerm
gum pre-printing paper fold vert / /
Organization
London Chief Office / PS PT / Royal Philatelic Society of Canada / American Philatelic Society / Canadian Forces Philatelic Society / British North American Philatelic Society / Postal History Society of Canada / /