Unitrade 197c – Die II – Babn Rotary Press -Accurate Perforation

I was working with a few Scott 197 and noticed the DIE II {Unitrade 197c} was assigned a perforation of 11 x 11....Did some perf. measurements and noticed 11.25 x 11....Contacted jogil {perforation guru} and he verified that these 11.25 x 11 rotary stamps were the new perf.


See write up as per jogil in BNAPS {Whole Number 539, Volume 71, Number 2}...Below is my quick measurement I did...Just so you can get an idea what we are talking about...
Robert

The BNAPS perforation expert is Richard A. Johnson. See http://www.bnaps.org/books/bookdeta...hp?bookid=58

I have tried many times to get this point across on SCF and in philatelic journals, especially the printing and perforating differences.

These rotary press stamps were printed on long paper webs/rolls. This required one perforator that could perforate the rolls in two directions (vertically and horizontally) before the rolls were cut into separate sheets. The short horizontal perforations were perforated by perforating bars gauging around 11.25 perfs. per 2 cm. The long vertical perforations were perforated by perforating wheels gauging around 11 perfs. per 2 cm.

On the other hand, the flat plate stamps were printed on individual separate sheets of paper. This required two separate perforators that could perforate the sheet in two different directions. One perforator perforated the sheet horizontally with perforating wheels gauging around 11 perfs. per 2 cm. Another perforator perforated the sheet vertically with perforating wheels gauging around 11 perfs. per 2 cm.

Jogil
I know who you are in the stamp world...I realize you are the perf guru and more SCF collectors and philatelic journals should take notice what is really out there...I to am troubled with perforation accuracy as you know.

I have been working with Newfoundland BNAPS editors doing a project with reguards to perforation accuracy and have a excel sheet with approx. 165 stamp perforation differences.

I can't believe collectors and organization have not paid attention to perforations...They pay attention to colour, re-entries, size, etc.

Robert
jogil, I am behind what you do and are trying to bring to the stamp world...Koodos buddy.