#291 1898 50¢ Trans-Mississippi

Basic Information
Color: Sage Green
Subject: Western Mining Prospector
Watermark: Watermarked double-lined USPS
Paper: Soft porous paper
Printing method: line-engraved intaglio on flat plates
Perforations: 12
Scott #: 291
Quantity issued: 530,400
Issued: June 17th, 1898
Value
An unused stamp with perfect gum: $375-$650
An unused stamp with gum and a hinge mark: $90-$175
A used stamp: $19-$30