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Montenegro, Michel Porto 16, Postfrisch
1905. MONTENEGRO. POSTAGE DUE 25 H overprinted Constitution УСТАВ Никољдан 1905, never hinged.
Montenegro, Michel Porto 16, mit Falz
1905. MONTENEGRO. POSTAGE DUE 25 H overprinted Constitution УСТАВ Никољдан 1905, hinged.
Montenegro, Michel Porto 18, mit Falz
1905. MONTENEGRO. POSTAGE DUE 1 Kr overprinted Constitution УСТАВ Никољдан 1905, hinged.
Montenegro, Michel Porto 18, Postfrisch, mit Falz
1905. MONTENEGRO. POSTAGE DUE 1 Kr overprinted Constitution УСТАВ Никољдан 1905, 4block with 2 stamps hinged and 2 stamps never hinged.