Some things I find interesting.
 Hope you also do....

 
Dummy Testing Coils with Black Defacement Lines

Shown below are additional examples of black defacement lines on tagged Cottrell press FTPO coils.  Because many of these examples are only pairs, several could be from the same printing.  Longer strips, 12 or more stamps, would be needed to show a complete revolution of a usually sized Cottrell mat... if these defacement lines were indeed actually applied on the Cottrell press. 

It is still unknown if these defacement lines were added by BEP, the USPS or others.

Shown here are 10 possibly different black defacement lines.  To more easily see the differences, examples are at 300%, scanned at 75 dpi and saved as jpgs at 90 quality.  Thank you for your patience while the page loads. 


 
Here is another example of two black defacement lines, but this time the lines are of different thickness.

 
 
This example has three unevenly spaced lines of varying width.

 
 
Three dark, thick, uniform black lines are on a line pair.

 
 
Three narrower lines are closer together than the previous example.

 
 
This strip demonstrates three black lines which, while printed less heavily, seem to be a mat reversal (mirror image) of the first three-line example previously shown on this page.

 
 

Shown on this line strip is an example of three dark lines with a "hint" of a fourth line running through the word "ONLY."  Scribe lines appear at the top on each side of the Cottrell line. 

 
 
This pair has three lines with a trace of a fourth line through the word "FOR."

 
 
Shown on this pair are three thick, non-uniform lines with additional partial lines above each thick line...  an example of a six line defacement with three poorly printed (underinked?) lines.

 
 
This pair has three fairly strong lines with traces of two other lines: one through the word "PURPOSES", the other below the word "ONLY"

 
 
Now here is an interesting pair: three very light lines alternating with three heavier lines.  Notice the middle heavier line which seems to begin (or end) on stamp number one.

 
 
Now this is defacement. What more can be said?

 
This is an initial attempt to document for collectors the different defacement lines which can be found on the Cottrell press tagged FTPO coils.  This is NOT meant to be an exhaustive catalog of what exists.

Surely, other types of defacement lines must exist in other collections. 

If you know of, or have examples of others,  I would appreciate the information and will gladly post scans of your coils giving you full credit.

Hope to hear from you

Joann
Stamps are FUN... but collectors are the GREATEST!