Henry Clay (biography)
15¢ - Olive green or dark olive green
16,000,000 - Double line USPS wmk. - Scott #284 - 1897

Used: $1-$2
No postmark with gum (MH): $25-$40
Full perfect gum, no postmark, no trace of stamp hinge mark (MNH): $90<

Issued: November 3rd 1898, earliest recorded date of use, March 3rd, 1899.
Plate Size: Sheets of 200 subjects (2 panes of 100)
Printer: The Bureau of Printing and Engraving
Quantity Issued: 16,000,000. A much undervalued stamp.

The color was changed so as it was not to be confused with #279
which had it recently had it's color changed to green so as to comply with UPU color regulations.

The Post Office report from 1899 supplies one with almost every detail you would wish to know about this stamp,
and every other stamp in this series. The level of detail is amazing.
Click here for more on this report

#284 is hard to find without a heavy cancel.
Ligher cancel are desirable

The source of the design

The source photograph (below) for the print above

Two early photographs of Henry Clay

Large Die Proof on India
Mounted on Card

Trial Color Proof on India

Mounted on grey card
From the Roosevelt Album

Plate Proof produced for the 1915
Panama-Pacific Exhibition