Netherlands 1924/1941 - Exhibition of stamps and Queen Wilhelmina, type W.A. Van Konijnenburg. - NVPH 136/138 en 346/349
German Empire 1914 - First German airmail, Mannheim–Heidelberg, official, flawless airmail card with - Michel 85
Free shippingGreat Britain 1903 - Edward VII set complete ADMIRALTY OFFICIAL - Stanley Gibbons nr O101-106
Italian Ancient States - Lombardo Veneto 1851 - First issue, 15 cents x 30 pieces in the various types
The Bahamas 1940 - First Undersea Post Office - SEA FLOOR MAY 6 1940 BAHAMAS Ovalstempel vom ersten Unterseepostamt