BUEA, Form stamp, 3 pieces with different postmark types, 10 Pfg imperial yacht with violet stamp "Buea (Cameroon) " on letter piece, registered letter with rare stamp in black on registration label on registered letter with British occupation 10 Pfg, vertical pair, and 20 Pfg, horizontal strip of four to Ennenda / Switzerland as well black "BUEA (Cameroon) as additional cancellation on picture postcard with 5 Pfg imperial yacht from "BUEA 30 / 10 08", very scarce pieces of evidence of the form cancel, the seeming only provisionally on postal pieces was used, two pieces expertized Pauligk