Israeli/Zionist paraphilately: 1930s 'Keren Tel Hai' revisionist-Zionist 2 x 5 vertical pane of undenominated stamps depicting a photo of a sailing vessel & commemorating the Betar Naval Academy's "School in Civitavecchia" in Italy (established 1934), with the slogan "Conquest of the Seas" at base, MNH & OG, with bottom margin selvedge.