Some Of My Rare US Stamps

Hunter, with all due respect, that is not blue paper. It looks tinted blue because of poor plate wiping


Peter

What you show is not what is meant in the USA by "blue paper."
NOTHING you have shown so far is rare or special in any way.

I selected stamps from this catalogue, I selected rare stamps with precancel and perforation..
Why do you say there are no rare stamps, if here is a stamp with precancel Chicago ill autumn rkdkaya or am I mistaken?
Here's a rare pair, the brands in the pair are different from each other, isn't it strange?
Mi:US PR350C

Look, the first stamp has 10 perforations of 11 teeth, the second photo, a pair of stamps has 10 perforations of 10 teeth, two stamps have 10 perforations, but the teeth are different, the first has 11 teeth, the second has 10 teeth.
Do you often come across a brand 10 perforation that has 10 teeth?
Are you confusing anything?
This is a very rare perforation 10 in which there are 10 teeth

It's medication time.

There are two types of 10 perforations on all sides.
The first type of brand is in 10 perforation with 10 teeth, and there is also 10 perforation only it has 11 teeth, 10 perforation with 10 teeth is very rare.

You are mistaken, though I don't know what to make of "autumn rkdkaya."


No, it is not strange. Also, not rare.

To my eyes, these 2 stamps have the exact same perforation and number of teeth on all 4 sides. I see no difference other than for centering that shifts the eye somewhat but it doesn't change the reality of the perforations at all.

It also strikes me that after almost 100 years after these stamps were issued that there would suddenly be many undiscovered groupings of characteristics for these stamps. Hundreds, if not, thousands of specialists in these issues have studied these stamps for decades, so it strikes me as virtually impossible that several stamps from these issues would suddenly be discovered in of all places Europe. How would one collector suddenly find multiple stamps that are not listed in catalogs?

The number of teeth is irrelevant. It is about the spacing of the teeth. Nowhere does it say it is a rare stamp.
You are showing stamps that are approximately 2.5centimetres high. A stamp with a perforation gauge 10, has ten perforations per two centimetres. Consequently, when the stamp is 2.5 centimetres high, it has approximately 2.5/2 x 10 = 12.5 perforations on each side. Your left stamp has 11 whole and two partial perforation holes. Your right stamp has 12 full perforation holes.

I count 12 teeth on the left stamp and 11 plus two partial teeth on the right stamp.




Many classic permanent (low-value) stamps are approximately 2 centimetres wide. The perforation gauge is the number of perforations per two centimetres.
Consequently, the number of perforations at top and bottom of such stamps will, approximately, be the same as the gauge.
So, it should not be surprising to see such stamps.
Most of these stamps are higher than 2 centimetres. If they have 10 perforations on the sides, they are unlikely to be 'perforated 10'.




No, there is no such thing in your pictures.

Well, look, the top has 10 perforations, 10 teeth, the bottom will have 11 teeth.
Top exactly 10 perforation, 10 teeth

Hunter - Do you know what a perforation gauge is and how to use it?

There are exactly 10 perfs or teeth, as the French call them, on the top and there are exactly 10 perfs or teeth on the bottom. There is no 11th perforation or tooth on the bottom, and no suggestion of an 11th . None.

Here is the second brand, top 10 perforation 11 teeth, bottom 10 perforation 10 teeth, one to one as in the second photo, only my brand with pecarsil.
Bottom 10 perforation, 10 teeth, top 10 perforation 11 teeth.

Appears to be a case of willful ignorance. I give up.

I have a few of these I'd be willing to negotiate a fair price on