1¢ green, grey green, dark grey green
Subject: George Washington
Printing Method: Offset
Perforations: 12½ (the only one produced)
Scott #: 536
Issued: August 15th, 1920
$4 - $6
No postmark with gum (MH)
$2 - $5
Full perfect gum, no postmark
no trace of stamp hinge mark (MNH)
$11 - $35
#536 was issued with the following plate #'s
400 subject sheets
10001-25, 32-33, 52
1600 subject sheets
Horizontal Pair, Imperforate Vertically
Value $650 - $850 (MNH)
This was an experimental perforation variety made on the Rossback perforating machine, which was on trial at the Bureau. This is the only stamp on which this experimental perforation was used. The machine did not work to the satisfaction of the Department inasmuch as almost half the sheets had to be destroyed because of perforation spoilage.
It was officially reported that 6,641 sheets of 400 subjects each were perforated on the Rossback machine which used a 12½ gauge perforation. Of the sheets perforated on this machine, only 3466 were cut-into panes of 100 and delivered to post offices, the balance being destroyed.
A full pane 100 of #536, there are four panes to a sheet of 400 except plate #9993 which had four panes of 400 for a sheet of 1600.