#535 – 1918 3c Washington, imperf, violet

Condition
Price
Qty
- Mint Stamp(s)
Ships in 1-2 business days.i$17.00
$17.00
- Used Single Stamp(s)
Ships in 1-2 business days.i$16.00FREE with 4,840 points!
$16.00
- Unused Stamp(s) (small flaws)
Ships in 1-2 business days.i$12.00
$12.00
- Used Stamp(s) (small flaws)
Ships in 1-2 business days.i$10.00
$10.00
11 More - Click Here
Mounts - Click Here
Condition
Price
Qty
- MM636215x30mm 25 Horizontal Strip Black Split-Back Mounts
Ships in 1-2 business days.i
$7.95
$7.95
- MM50327x30mm 50 Vertical Black Split-Back Mounts
Ships in 1-2 business days.i
$3.50
$3.50
- MM420027x30mm 50 Vertical Clear Bottom-Weld Mounts
Ships in 1-2 business days.i
$3.50
$3.50
 
U.S. #535
1918-20 3¢ Washington

Issue Date:
September 30, 1918
Printed by: Bureau of Engraving and Printing
Method: Offset printing
Watermark: None
Perforation: None
Color: Violet
 
U.S. #535 is the only imperforate Series of 1918-20 3¢ stamp produced by offset printing. It was only produced with Type IV plates of 400 subjects.
 
Offset Series of 1918-20
With the introduction of offset printing, the Bureau began its first experiment in mass production. Although millions of stamps were being printed each day with the conventional flat bed presses, this new method allowed for the printing plates to be produced automatically. Therefore, the plates could be prepared containing as many as 1600 stamps as compared to the old plates, which only had 400 per plate! These were the largest plates ever produced. 
 
The process for making offset plates was basically performed with a camera and required no engraving or transfer rolls. An enlarged photograph of an engraved die proof was retouched to emphasize the shading lines and then photographed to create the “master negative.” This negative was placed in a special repeat machine, which photographically reproduced the positive impression on a glass plate. The image was repeated until the desired number of stamps was positioned on the plate.
 
From this glass plate, a celluloid negative, called a “mask,” was created, and at this stage, the plate numbers and guidelines were added. Finally, a positive impression was made on a steel plate, which was the actual plate used in printing.
 
Several differences distinguish stamps printed by offset from a flat plate stamp. The most noticeable is the lack of texture if one runs a finger lightly across the stamp’s surface. Because the ink lies flat on the paper, an offset stamp will feel very smooth, while the flat plate stamp, that is engraved, will have tiny grooves and ridges. Also, the ink used in offset printing is of a different quality and will vary in color when compared to the flat plate stamps. All stamps printed by the offset process will appear blurry and have less-defined images.
 

 
Read More - Click Here


  • Mini Mix, approximately 500 Stamps Mini Mix, 500 Worldwide Stamps

    Get an instant stamp collection in one simple step.  Order Mystic's mini-mix and you'll get 500-plus U.S. and foreign stamps on and off paper.

    $19.95
    BUY NOW
  • 1887-98  Reg Issues, 12 stamps, used 1887-98 Regular Issue, 12 Used Stamps
    Save time and effort with this collector's set of 12 postally used definitive stamps issued from 1887-1898.  These stamps are now all over 100 years old and represent a ton of neat history.  Order today!
    $30.95
    BUY NOW
  • German Zeppelin Facsimiles, 8v Mint German Zeppelin Facsimiles
    The original set of these overprinted German Graf Zeppelin stamps is very valuable. These high-quality facsimiles offered here were created in Germany and will allow you to affordably fill the spaces for these stamps in your worldwide album and enjoy their classic designs.
    $9.95
    BUY NOW

 

U.S. #535
1918-20 3¢ Washington

Issue Date:
September 30, 1918
Printed by: Bureau of Engraving and Printing
Method: Offset printing
Watermark: None
Perforation: None
Color: Violet
 
U.S. #535 is the only imperforate Series of 1918-20 3¢ stamp produced by offset printing. It was only produced with Type IV plates of 400 subjects.
 
Offset Series of 1918-20
With the introduction of offset printing, the Bureau began its first experiment in mass production. Although millions of stamps were being printed each day with the conventional flat bed presses, this new method allowed for the printing plates to be produced automatically. Therefore, the plates could be prepared containing as many as 1600 stamps as compared to the old plates, which only had 400 per plate! These were the largest plates ever produced. 
 
The process for making offset plates was basically performed with a camera and required no engraving or transfer rolls. An enlarged photograph of an engraved die proof was retouched to emphasize the shading lines and then photographed to create the “master negative.” This negative was placed in a special repeat machine, which photographically reproduced the positive impression on a glass plate. The image was repeated until the desired number of stamps was positioned on the plate.
 
From this glass plate, a celluloid negative, called a “mask,” was created, and at this stage, the plate numbers and guidelines were added. Finally, a positive impression was made on a steel plate, which was the actual plate used in printing.
 
Several differences distinguish stamps printed by offset from a flat plate stamp. The most noticeable is the lack of texture if one runs a finger lightly across the stamp’s surface. Because the ink lies flat on the paper, an offset stamp will feel very smooth, while the flat plate stamp, that is engraved, will have tiny grooves and ridges. Also, the ink used in offset printing is of a different quality and will vary in color when compared to the flat plate stamps. All stamps printed by the offset process will appear blurry and have less-defined images.