1c Benjamin Franklin Perforation Top Bottom 11-73, Sides 11-72.

Shakey 7, I am not asking for expertise, nor an expert opinion... I am just seeking for the proper documentations and study cases related to the 11-73 of Richard Kuisalas. More for what you mentioned, yes, there is also certified expertisers.

Thank you

Littbarski, yes correct, comparing sides with a software or similar stamp will give a good indication for daily use when the sides are not damaged (so why the perforations looks damaged is another topic). Please always make sure when you are comparing with similar stamp, if possible for you to have it from the same batch so you can be sure that it is perforated with the same pins, or if the stamp has a detail expertise for the perforations.
If you mean the sides measures having not the exact values in our actual case (other cases with other stamps could have exact values) pls do note several factors: 1- the sides are perforated manually after printing and not at the same time, thus seldom to acquire zero-degree alignment between holes and same positioning on the same side since the lot is manually turned, pins wear will be shown similar on both sides. 2- I advise you to acquire a nanometer certified ruler (scale), you post it beside your stamp and you do the scan (for precise measurements always acquire a scanner with a calibrating reference), afterward you measure the values of your certified ruler with Autocad (it should match with the calibrated reference of the scanner) (not an editing software or stamp software) so you can be sure for the correct values. In all cases, any stamp software or editing software should be calibrated to match the physical correct values of a certified scale. (photoshop, perfomaster and gimp are quite accurate for daily normal use). Also always try to do your scan with the software you want to measure with. To come back to our case, my focus for the software measures was for the top bottom which I made sure to be perfectly parallel zero-degree angle thus having same measures, if my focus was on the sides I will make them zero degree, in all cases, in any stamp software notably for the rotary perforated ones you should take the top bottom and the sides each one alone with zero degree. Rotary design stamps tend to diamond shape (in micrometer values) rather than the rectangular one due to the paper stretching. 3- Not taking all the above factors into consideration, the difference value on the sides is still in the tolerance limit of pins spacing given by the machinists at that time.
The above pictures posted are the informative ones; I did generate the nanometer values for design size, shape, perforations with the autocad ai mode.
To come back to our topic what I am seeking are the proper written documentations, study cases, references relative to the 11-73 Richard Kuisalas for the 1c ben Franklin.
Thank you.

Littbarski, sorry typo error : 2- I advise you to acquire a micrometer in thin steel certified ruler (scale)..... not nanometer.

OR, you could just use a perforation gauge like the Philatelic Foundation does.

What is even going on in this thread?

Hello rogdcam, exactly, but I was refering in case of use of softwares.
Personally I am from and with the old school, but sometimes you know I need to re-confirm digitally.

Best Regards

hello parcelpostguy, thank you for the link, indeed I was discussing with a retired expertizer who mentioned to me that they had available at that time three to four pages, manually written by Richard Kuisalas specific for the 1c ben franklin.
This if found it will be the core proof.

In all cases appreciating all efforts from all in this forum for any more information on this subject.

hello philazilla, I am seeking documentations, study cases, references, advices, experiences..... relative to the 11-73 Richard Kuisalas for the 1c Benjamin Franklin.

I am not an expert on Richard Kiusalas and his work. Was he working at the BEP at some time?

I ask because from all I remember, he tried to say that there was a 11-73 officially while many others, also later, said that the 11-73 was fake, perhaps even by himself. I guess this is what you found out as well if you did some research. Then the question appears if a text written by Kiusalas can be a proof for his own case :).

On the other hand, I also read in the past the 11-73 was uncommon, but used in the 1920s or 30s. I also found stamps with some side in 11-73.

Are the perforation holes aligned between rows in your case, is it really a rotary stamp, and what stamp is it, after all?

hello litbarski, I did summize your first part questions in my first post.
an inline perforating system (differs depending the year) was installed on rotary presses perforating the top and bottom of vertically fedded stamps leading to holes to be aligned. no, the sides holes angle is 0.32 degree between them.

I have to admit that this is one of the most confusing threads that I have seen on SCF. I guess the OP doesn't want to show us the entire stamp (why not?) but wants some links from us. Can anyone link the appropriate information? I certainly don't have it.

Hello Partime, its not confusing at all, rather it is cibled.
in your previous post you were interested to see the reability of stamp softwares.
yes, at a certain point they are (not all of them) when you present them the required settings to measure your stamp.
when there is not much documented informations on this topic, I had no other choice rather to make it public hoping to get the needed answers, previous experiences......

An open letter to the moderators,
Quite frankly, until we get a full scan of the front and back of the stamp WE ARE BEING TROLLED.
We don't even have any evidence to back up the claim that it is a rotary printing!
We know nothing of the collecting experience of the poster, etc.
It is absolutely contrary to the spirit of openly sharing information in this forum to have a poster provide half information and expect fulll information in return.
This thread should be LOCKED until such time as the OP stops being coy and provides full information.
Otherwise we are all wasting our time here with any more replies.