Bulgaria. (French Colonies). 1898. Registered envelope addressed to Porto Novo, French Dahomey bearing Bulgaria Yvert 36, 50c blue-grey tied by Vidan date stamp '1st June' with framed hand-struck 'R', routed via Marseille on French paquebot with octagonal 'Marseille a Loango L.M No 1' date stamp (Salles 1251) and Cotonou/Dahomey transit on reverse '18th Juil'. Very rare destination from Bulgaria.