Kansas Nebraska Overprints Of 1929 With Missing Period

The most comprehensive writing on the topic of counterfeit Kansas-Nebraska overprints:

http://pascackstampclub.weebly.com/...erprints.pdf

One takeaway:

Genuine overprints have gum with only one gum breaker and striated ridges.

OR two widely spaced gum breaker ridges near the very top and bottom of the stamp

So scott 669b is for the stamp that shows no ink where the period is to be but can have an impression? or is there another type of missing period where the plate was defective? Or does scott 669b include both scenarios in that listing?

Info/images for US gum breakers
https://stampsmarter.org/learning/M...reakers.html

Don

Again, these overprints were surface printed, just like pre-cancels. There is no "impression".

Painting with a broad brush.

Details of some exceptions was not include by design. So if you are going to add details, do just stop there, add all the details for the differences between the correct base stamp to be overprinted. There are many such as no straight edge and only certain plate numbers were used and, and.....

As to indentation on mint stamps with full gum, there will be no indication in the gum as the gum was applied after the overprint but some pressure was applied to the paper when the overprint was added. No you are not going to see paper dents as found with engraved stamps.

Frankly anyone buying a K-N OP needs a cert to be sure of their purchase, but that is nonsensical due to the price for some of the stamps, less so for used. This is becoming true for almost any overprinted stamp today for example there is a huge number of so-called Darrah Shanghai Overprints regularly coming out of Romania.

And the shades of the K-S overprinted stamps are generally paler and less bright then those issued later. BTW, the remains of the gum breakers can often be seen on used stamps by holding them reversed at an oblique angle to a light. They did mark the paper, and those shadows can often be seen.

Did anyone read the link.

Very interesting discussion here. You can have a have a blockage that would prevent an impression. In this case I would think an underinking is more the cause of this missing period. If a damaged plate I would think a crack line or something would be present. It may have never been there if the transfer was not completed on that stamp impression. I do not think a press team member would have noticed a missing dot. If so it was so small of an imperfection it was let threw. In any case it let the hobby a nice error to add to your collection.

Hi thanks for your reply. This stamp is listed in Scotts and all I am trying to find is what do they attribute the missing period error to? damaged plate? under inking? plate blockage? or all of the above?