Scott 195 King George V - Very Odd Perforations

Here is one of my Scott 195 pairs.
Catalouge shows 11 x 11 perforation.
Can not explain this odd perf.

My perf. 11.25 x 11
FIRST picture- Vertical 11 perf.
SECOND picture- Horz. Perf.taken at 11
THIRD picture- Horz. Perf. taken at 11.25

Robert

Frankly, I don't get it. ¾ perforation difference on a stamp 88 years old??

I don't see that, the lines are moving increasingly to the right

Yes rod222..Meant taken at perf.11...Remember took the reading with perf. 11 and perf.11.25...That is why I said it is an odd, non catalouge perforation of Horz.11.25.

Robert
Also found these Scott 36 perfs. as per Jogil SQ stamp perforations...I need more.
12.0 x 12.12
12.0 x 12.2
12.0 x 12.25
12.0 x 12.4
12.12 x 12.0
12.12 x 12.25

Robert,
I don't wish to rain on your parade, I have recollections of Don?
explained the risk of using these digital overlay perf guages.
Perhaps I am mistaken, but I did ditch mine (You sent me) in preference to visual guage reading.

The difference of .25 of a guage matters little to me, without some history of what perforating machines were in use at the time.

Perforting pins are, as I understand it, fitted in to solid steel
punch blocks. I cannot see six different perforating blocks used within one stamps period of use, there must be some other explanation.
If there were, surely BNAPS would have some history of that.
I would be looking at perhaps paper, humidity, etc.

Hi rod222...I respect your opinion, but when I see perforation differences by .25 measured on stamps by experts like..

John Wash
Garfield Portch
John Sheffield
Robin Harris

I believe these people in that other/new perforations as possibly realistic.

Have a great day my friend...Robert



Not at all..Using perf.gauge..Plastic Unitrade,and a ideal gauge to double check.

Okay, I will stop posting possible new finds in perforations
Have a great day guys..Stay safe.

No, that was not intended, Robert,
just querying on how one would explain all the apparent different perforation varieties.
Try not to take debate as personal.

The people you cite, do they offer and reason for the varieties?
Is there anywhere I can read their findings please?

Thread Title "Very odd Perforations"
my curiosity was "How" ?
I like to know how the process leads to the variety...

This may lead one to a solution, I do not have though.

Stamp Perforations with Particular Emphasis on Canadian Stamps
Richard A. Johnson
Released August 2009.
100 pages, 8.5x11, spiral bound.
Colour C$ 27.00 [ISBN 978-1-897391-48-8 ].

Dick Johnson's Stamp Perforations with Particular Emphasis on Canadian Stamps presents a history of stamp perforation methods, and results of studies on how various perforation varieties have been produced. The design and operation of early perforation machines are described based on primary reference material, and the evolution of perforating machines through to the high-speed perforators used in the late twentieth century is discussed. It is shown how a lack of understanding of the methods used for perforation during the stamp-production process, especially in a Canadian context, has led to ambiguities and inaccuracies in perforation gauges and consequently in stamp-catalogue listings.

Further reading
https://stampsmarter.org/learning/M..._canada.html

BABN web fed rotary press printed stamps were line perforated 11.25 x 11 by one web fed bar and wheel perforator.




BABN sheet fed flat plate press printed stamps were line perforated 11 x 11 by two sheet fed wheel perforators.

A total aside from the topic, any answer as to why some workers are wearing that head covering?

I would like to share the fact that perforation gauges do not always agree in measurements. I took my old yellowed plastic Stanley Gibbons Instanta Perforation Gauge and laid my newer clear plastic Instanta on top of it. I back lit it on a light box and took the picture below. Note at perforation 18 the numbers and lines line up fairly well but at perforation 10 it almost looks like an 18 and the horizontal lines are spread apart. A good example of how inaccurate the measurements can be depending on what gauge yo might use. You can get accurate measurements but how accurate is the device you use to get those measurements?



Mike

The British monarchs appeared on the stamps of many different countries. Would it be possible to add the country name to the heading?

BlackJag, the ladies are wearing the homemade hats because of all the flying chads/punched perf holes thrown up by the perfing machines. Imagine going out in humid or rainy weather with a bunch of those in your hair. I suppose the rest have either given up perms and/or wash their hair every night.

Now if those were doughnut holes being thrown around...

People would by congratulating you on your marriage......

Thanks for the explanation, had me beat



Noocassel, it is in the Canadian Stamps thread.

I agree with Noocassel. Why not put Canada or whatever country name in the title of the thread? It can only help, since I search by recent topics, not by topic thread type. I try to do that on all of my new threads.