#428 – 1914 5c Washington SL Wmrk blue

Condition
Price
Qty
- Mint Stamp(s)
Ships in 1 business day. i
$52.00
- Used Stamp(s)
Ships in 1 business day. i
$0.75
- Unused Stamp (small flaws)
Ships in 1 business day. i
$35.00
- Used Stamp (small flaws)
Ships in 1 business day. i
$0.60
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Condition
Price
Qty
- Mint Plate Block of 6
Ships in 30 days. i
$520.00
camera Mint Stamp(s)
Fine
Ships in 1 business day. i
$62.50
camera Mint Stamp(s)
Fine, Never Hinged
Ships in 1 business day. i
$85.00
camera Mint Stamp(s)
Very Fine
Ships in 1 business day. i
$95.00
camera Mint Stamp(s)
Extra Fine
Ships in 1 business day. i
$155.00
Grading Guide

Mounts - Click Here
Condition
Price
Qty
- MM63625 Horizontal Strip Mounts, Black, Split-back, 215 x 30 millimeters (8-7/16 x 1-3/16 inches)
Ships in 1 business day. i
$7.50
- MM50350 Vertical Mounts, Black, Split-back, Pre-cut, 27 x 30 millimeters (1 x 1-3/16 inches)
Ships in 1 business day. i
$2.95
- MM4200Mystic Clear Mount 27x30mm - 50 precut mounts
Ships in 1 business day. i
$1.95
U.S. #428
Series of 1914-15 5¢ Washington

Issue Date: September 14, 1914
Printed by: Bureau of Engraving and Printing
Method: Flat plate
Watermark:  Single line
Perforation: 10
Color: Blue
 
The Postal Service received complaints, particularly from heavy-user businesses, that sheets perforated 12 were too brittle and fell apart at the slightest touch. To strengthen the sheets, perforating machines were altered to 10 perforations per 2 centimeters, beginning with the 1914 issues.
 
Perforations Changed from “12” to “10”
When the 1908 series was issued, all stamps were perforated 12 gauge. Soon, both the public and postal workers began complaining that the perforations were too close, and the stamps could not be handled without coming apart. It wasn’t until 1910 that the Post Office Department began taking their complaints seriously. At this time, the Bureau began producing coils on a machine that would automatically wind the stamps into coiled rolls. They soon found the 12 gauge perforations were much too brittle to be used, since the stamps were continually becoming separated in the coiling process.
 
These events brought about the change to 8 1/2 gauge perforations. However, this produced stamps that were difficult to tear apart, consequently ripping the stamps. Again, the perforations were changed, this time to 10 gauge. While this change was fine for coiled stamps, it was unsuitable for sheets, which had a tendency to tear rather than separate at the perforations. Eventually, it was decided that 11 gauge perforations were suitable for sheets, while 10 gauge perforations were best for coils.
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U.S. #428
Series of 1914-15 5¢ Washington

Issue Date: September 14, 1914
Printed by: Bureau of Engraving and Printing
Method: Flat plate
Watermark:  Single line
Perforation: 10
Color: Blue
 
The Postal Service received complaints, particularly from heavy-user businesses, that sheets perforated 12 were too brittle and fell apart at the slightest touch. To strengthen the sheets, perforating machines were altered to 10 perforations per 2 centimeters, beginning with the 1914 issues.
 
Perforations Changed from “12” to “10”
When the 1908 series was issued, all stamps were perforated 12 gauge. Soon, both the public and postal workers began complaining that the perforations were too close, and the stamps could not be handled without coming apart. It wasn’t until 1910 that the Post Office Department began taking their complaints seriously. At this time, the Bureau began producing coils on a machine that would automatically wind the stamps into coiled rolls. They soon found the 12 gauge perforations were much too brittle to be used, since the stamps were continually becoming separated in the coiling process.
 
These events brought about the change to 8 1/2 gauge perforations. However, this produced stamps that were difficult to tear apart, consequently ripping the stamps. Again, the perforations were changed, this time to 10 gauge. While this change was fine for coiled stamps, it was unsuitable for sheets, which had a tendency to tear rather than separate at the perforations. Eventually, it was decided that 11 gauge perforations were suitable for sheets, while 10 gauge perforations were best for coils.