1¢ Grey green, green
Subject: George Washington
Printing Method: Rotary Press (see below)
Perforations: 11 (19½-20mm x 22mm)
Scott #: 545
Issued: June 25th, 1921
$10 - $20
No postmark with gum (MH)
$20 - $50
Full perfect gum, no postmark
no trace of stamp hinge mark (MNH)
$80 - $135
#545 was issued with the following plate #'s
Number followed by S30
Star and Number
13812-13, 26-27, 56-57, 72-73, 94-97
13906-07, 10, 31, 69
These stamps also came from coil waste of #490 and #492 but the coil waste had no perforations when originally saved. Thus, when sheet stamps were needed, the imperf coil waste was perforated 11, the gauge being used at the time.The stamp is perforation 11 on all sides. A very important maker of this stamp is its size. The stamp design measures 19½ to 20mm x 22 mm. The measurement has to be exact, down to the ¼mm (for the dedicated I recommend the accurate Phil-a-meter gauge as a measuring tool).
If the stamp has offset color (green flecks of ink) on the back it is a flat plate printing and is #498.
First day cover, June 25th, 1921
As the curved plates of the Rotary press made the stamps slightly larger it is relatively easy to discern which stamp is flat plate and which is a rotary press stamp. First select any perf Washington Franklin stamp or the first issue Washington Franklin 1 cent or 2 cent. These are the stamps with the numbers one and two spelt out, instead of numbers being displayed. I chose the latter alternative as shown in the first image above.
Then cut out squares at each corner. As shown in the second image above. Placing the stamp you wish to test under your cut out stamp you can see if the frame lines match. If, as in the last image shown above the frame lines are outside the top stamp in either the top, bottom or sides then you have a rotary stamp. If the lines are in the same place, as shown in the third image, you have a flat plate stamp.
This test works with any value stamp.
The image above is a perfect example of the reverse of a flat plate stamp. The flecks of carmine ink on the reverse can be found on flat plate and are very rare on rotary press stamps. The cause of the flecks of carmine ink is that during the flat plate process the sheets were placed on top of each other before the ink had a chance to dry properly.