1¢ yellow green, green, dark green
Subject: George Washington
Printing Method: Flat Plate
Perforations: Perforated 8½ horizontally
Watermark: Single Line USPS (see below)
Scott #: 410
Issued: March 18th, 1912
Used
$5 - $15
No postmark with gum (MH)
$6 - $10
Full perfect gum, no postmark
no trace of stamp hinge mark (MNH)
$18 - $25
Add 25% for line pairs
Prior to the issuance of this stamp Franklin's head was used as the vignette subject. Indeed every 1¢ stamp issued in the US up to this point had Ben Franklin grace its design. The 1¢ was changed to George Washington and all values 8¢ and above were changed to Ben Franklin.
Another change was to change the value from ONE CENT to 1 CENT 1. This was to conform to the Universal Postal Union regulations that stated the value of a stamp has to be displayed numerically.
The earliest recorded use was on April 17th, 1912, as seen above