苏丹 - 公务邮票 (1900

[Camel Postman - Sudan Postage Stamp of 1898 Overprinted &#34;O.S.G.S.&#34;, 类型 B1]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B2]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B3]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B4]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B5]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B6]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B7]

[Camel Postman - Sudan Postage Stamps of 1902 Overprinted &#34;O.S.G.S.&#34; with Square Periods, 类型 B8]

[Camel Postman - Sudan Postage Stamp of 1898 Overprinted &#34;O.S.G.S&#34;, 类型 B9]