Germany Caroline Islands. Michel 10h used , 1901 Ship 20 pf blue without wmk, bisected superb used on piece, with Ponape cds and posthorn coat-of-arms negative postmark, neatly juxtaposed, signed twice Buehler and Union. One of the scarcest stamps of German Pacific area, neatly cut square showing all of the pmks, originally part of photo postcard. Exhibition item. EUR 3000