Possible Constant Variety – Unitrade Scott 642

I am posting this entry called " POSSIBLE CONSTANT VARIETY – ONE". The reason I wanted to start ONE, then TWO then THREE, etc (And feel free to do your own post using these titles), so all collectors realize they can have a part finding the next Constant Variety.

It is nice finding one and I know...This is something a newbie, a intermediate and experienced collectors can help with...There are hundreds of collectors on this site that can work together at finding the next constant variety.

I am using the 1972 Cycling Championshipfor the first example...I took my sheet and flyspecked every stamp and assigned a position to each oddity...If anyone has these examples, please reply or post your own findings.

Robert

Picture courtesy Canada Postal Archives













BTW..My sheet does not have a plate number assigned to it.

Why not have "Canada Unitrade #xxxx" as part of the thread title? Otherwise it may be nearly impossible to find this post in the distant future without sifting through a haystack.

Second, a position # means very little without knowing what plate# and quadrant your pane is from.

Wert, Thanks for the edits. I see from internet offerings the panes are all apparently #1, and have that identical designation in all 4 corners. That said, is it known whether the press-plate contained only 1 pane impression, or a pair or quad? It would be helpful to know to make any determination of whether these are original flaws, progressive flaws, ever corrected, or transient oddities.

Hi wert, for me it look like ink splatter. I have 7 plate block #1 and only those in the lower left and right position have those red ink spot around the #8 and little dots near Canada. For the red mark that you have in possition 38 near the saddle, mine is simmilar at the same place but at possition 45. For the ballance it is ink that have splatch here and there around the #8. If you look closser on the red ink you will see bubble, the ink is not smooth at all.

Paul.

Hi Wert

This stamp is for the 1972 Cycling Championship not



Nice sharp closeups.

I first of my copies that I looked as seems to be your Position 38 example.

I'm waiting to see what name will be given to position 38 if it is a constant variety

Peter

Wow...Nice flyspecking on itma and Pollux..Same as mine..Now we are getting some where.

Robert








pwscg...You had to mention that...hahaha

Hi, wert. Take a break here, do not go too fast. The little red line under the saddle is at possition 38 for you and at possition 45 for me but not exactly at the same place under the saddle. There is no correlation here. Remember in a previous topic, you spoke to me about ink spatter when heavy inking is used and also debris on the printing plate for an almost similar topic.
Itma have a different mark, not a clear line under the saddle but also at possition 38. Did you look clossely at the red ink? there is presence of bubbles in the ink (to mutch used)that probably cause the splashing at random location different than yours on my lower plate blocks but none on the upper ones. All plate blocks are pl No1 for 642, 642i and 642ii

Paul.

Are these stamps intaglio recess line engraved stamps?

Pollux
You make a point that a lot of collectors might miss....If you look at the cycling emblem and the printing of the colour red on "CANADA", they are affectingly 2 different colours.

The reason only has 2 conclusions
ONE - Both printed with different colours (probably not)
TWO - Thermography printing affect (Reason for a second colour)

In high school, I took printing for 4 years and came across every type of printing process...When we wanted to have the affect of raised/semi-raised lettering, we used a form of Thermography...Immediately after the item was printed (say black lettering) And before the ink started to dry, it was sprayed with a black powder, which cause raised/ semi-raised lettering or picture.



Below is the colour difference between the letter "CANADA" and the colour of the "EMBLEM"


This colour difference can be attributed to using a RED Thermography spray that was not exactly the same colour of red that "CANADA" was printed with.

Bottom line, I will contact my personal contact Martine in Library and Archives Canada..She has made it clear that she would be willing to help me as long as it was part of stamp collecting information retrieval...I will post if/when I receive information.

Robert

Heard back from my friend in Archives Canada with the reply..




Robert

As an interesting aside, I actually own and am selling the original artist sketches from this particular issue. It's neat to see some of the early production steps of postage stamp creation as there are artist notes to another person actually on the papers.

Anyway back on topic, that is some intense flyspecking! Interesting to see if they are found on most stamps in those positions.

Edit: I also never noticed the date printed on the cyclist at the bottom before.