One of two recorded covers with the 5¢ 1856 Imperforate paying the registration fee

5¢ Red B (Image)

E. $ 2,000-3,000

The only recorded double 10¢ rate cover with a 3¢ 1851 and 5¢ 1856 Imperforate combination

5 (Image)

E. $ 1,500-2,000

An extraordinary eight-times 3¢ domestic rate cover with a unique mixed-issue franking of four 5¢ (Image)

E. $ 5,000-7,500

The earliest documented use of the 5¢ 1856 Imperforate Issue--an important classic United States (Image)

E. $ 15,000-20,000

Extremely Fine Gem pair of the 5¢ 1856 Imperforate Issue on an attractive cover-- one of the fine (Image)

E. $ 10,000-15,000

Choice 5¢ 1856 Imperforate pair cancelled in red on a small and attractive cover to Canada

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E. $ 1,000-1,500

A unique combination of the 5¢ 1856 Imperforate, 1¢ Type IIIa and 3¢ 1857 Perforated Issues

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E. $ 5,000-7,500

A unique use of the 5¢ 1856 Imperforate on mail originating in British North America and one of t (Image)

E. $ 20,000-30,000

A fabulous 5¢ 1856 Imperforate corner sheet-margin stamp used on cover to France

5¢ Red B (Image)

E. $ 5,000-7,500

Choice 5¢ 1856 Imperforate stamp on British Open Mail cover to France

5¢ Red Brown (12),< (Image)

E. $ 750-1,000

An extremely rare 5¢ 1856 Imperforate franking for American Packet service to France

(Image)

E. $ 10,000-15,000

A unique 1851-56 Issue franking for American Packet service to France and the earliest transatlan (Image)

E. $ 10,000-15,000

The only 5¢ 1856 Imperforate block used on cover to France or with other stamps-- one of the most (Image)

E. $ 30,000-40,000

A double-rate "Three Months" cover to France with a unique combination of stamps

5¢ R (Image)

E. $ 20,000-30,000

One of two recorded 5¢ 1856 "Three Months" covers carried by American Packet

5¢ Red B (Image)

E. $ 3,000-4,000

A fascinating 5¢ 1856 treaty-rate cover to France carried on the special Inman Line contract sail (Image)

E. $ 4,000-5,000

Attractive and colorful treaty rate cover to France with a strip of the 5¢ 1856 Issue

(Image)

E. $ 1,500-2,000

5¢ 1856 and 10¢ 1855 Issue on an unusual first-week treaty rate cover to France

5¢ Re (Image)

E. $ 2,000-3,000

The phenomenal triple-rate cover to France with strips of the 5¢ and 10¢ Imperforate-- a recent d (Image)

E. $ 30,000-40,000

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The finest of the three recorded covers with six 5¢ 1856 Issue stamps, the largest numb (Image)

E. $ 50,000-75,000

Cover to Germany with the largest intact block of the 5¢ 1856 Issue known on or off cover

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E. $ 20,000-30,000

Extraordinary combination of 1851-56 Issue stamps paying Prussian Closed Mail rate to Germany (Image)

E. $ 2,000-3,000

Rare 5¢ Imperforate and 10¢ Perforated mixed-issue franking on cover to the Kingdom of Hanover (Image)

E. $ 1,500-2,000

A spectacular cover with the 5¢ 1856 and 1855 10¢ Type II strip of three correctly paying the 35¢ (Image)

E. $ 5,000-7,500

5¢ 1856 Issue used on a "Three Months" cover to Italy via England and France

5¢ Red B (Image)

E. $ 1,500-2,000