Raised Dotted Line Found On Flag Stamp

This caught my eye recently while going through a stash of recently obtained cancelled stamps. I found a row of raised dots near the stamp's bottom. What is this all about? Thanks for your insite.

I don't have a mint booklet pane handy, but could it be a dashed line in the bck of the liner paper that was pressed in too hard?

Not a bad suggestion eye, but I believe the stamp is a coil. Could it be marks made by a stamp dispenser?


Peter

those bumps looked raised?

I found a similar stamp today. Initially I started a new forum thread for it, but then someone thankfully pointed me to this thread.

My photograph depicts Scott 5655 on an envelope. I purchased this stamp, placed it on an envelope, and was preparing to mail it when I realized something was unusual.

There is a series of vertical ridges on the left side of the stamp, between the serpentine die cut and the actual stamp image.

What is this distinct series of vertical ridges? In addition to the two of us in this forum thread, are other people spotting such ridges?

Further detail:

• purchased from USPS Philatelic Fulfillment


• USPS item # 750703


• purchased as a strip of 25 from a coil of 3000


• this stamp was positioned one (1) left of the plate number


• the backing paper seems 100% normal: no line, no ridge, nothing special

3193zd asked, "those bumps looked raised?"

YES... these "bumps" ( or "raised circles" as I called them ) are perfect circles. The shadowing you see is accurate because they are "bump" shaped. Maybe bumps is a better description too.

Once again, I found these among a recently acquired batch ( from my local rural water district ). Other than that fact I have no history on the stamp's origin.

Well, this also nixed my theory of a dispenser; to my knowledge the USPS in the Cave does not use stamp dispensers
Back to the drawing board!
Since these are two totally different issues, maybe something in the printing process?
Bluejay2, can you let us know the platenumber of the strip that you acquired?


Peter

Answering the question of Petert4522:
My strip of 25: Flags (Scott #5655) included one stamp with plate number B1111.

kind of looks like the edge of a heavily inked tagging or lacquer overprint. Do you see anything unusual with a tagging light?

Since you have the backing paper bluejay2 are there similar corresponding impressions on the backing paper? If not, I like the idea offered by eyeonwall. Not while the design orientation is different between the two stamps shown, the row of raised dots correspond with the die cut 'perforations' and not the straight edge.

I have similar lines on the stamsp to the left of the plate number, but not raised. They seem more likely printed. #5655 is from a 10K roll and looks to be a nearly continuous line. #5656 is from a 3k roll and has an irregular broken line. Both were purchased from the Oneco, CT post office.

I have similar lines on the stamps to the left of the plate number, but not raised. They seem more likely printed. #5655 is from a 10K roll and looks to be a nearly continuous line. #5656 is from a 3k roll and has an irregular broken line. Both were purchased from the Oneco, CT post office.

Baldeagle2, the lines you see on the left of the plate number are found on all coils lately. They are seam lines and if you look closely they are actually in the color(s) of the stamp. They are not the same as the broken, dotted lines that are shown in the two pictures


Peter

Before I make the next post, I want to bring clarification to the Scott numbers. Scott 5655 is printed by BCA in coils of 3,000 or 10,000. Scott 5656 is printed by BCA in coils of 100.

A new twist on this "dots" subject…

This photograph is of USPS # 760903, which is from a coil of 10,000. I took it out of USPS packaging today, though have not removed it from backing paper. Scott #5655. When held in strong light at an angle, a vertical column of dots is visible. The column is not perfectly straight.

Similar to previous examples: The impacted stamp is ONE to the left to the plate number.

Contrary to my previous example: The column of dots is not at the left edge of the stamp, but rather 25% into the stamp design. The dots do not appear to be raised. Perhaps tiny recessed dimples?