Wednesday, 11 November 2015

Phosphor Coated Paper 1 Verses Phosphor Coated Paper 11


Even after years of debate and scrupulous studies the debate over these issues still goes on. What can we do or say to bring this debate to a satisfying conclusion?

I suggest we start with the actual production of the stamps.

Crazyh1 (Scott) writes on the Machin Forum " It is important to challenge established knowledge and apply scientific rigour to this review"

I have to agree with him, forget all this nonsense of the photo negative effect (this is unreliable) and remember that it was a production manifestation that brought about the variant, possibly or probably due to the amount of phosphor used in the initial coating of the paper and the actual printing process during production .

With the phosphor coating and the ink used in the actual printing, we can add the conditions during the drying process, here we have a scientific answer of sorts.

 IE:  The more ink used the greater the shiny effect to the finished article. I compare it to the similarity to variants of deep yellow or dull yellow of the phosphor bars when the OFNP  new issues were released and the trials and errors with the yellow phosphor compound when they first hit the Machin scene.

Please remember these are just my thoughts on this subject, hopefully without baffling you with to much science.

Here do we have a definitive answer? In layman's terms. Dull - PCP 1 (less ink) or Shiny - PCP 11 (more ink).

Dare I say it ?  I wager the debate will still go on.

1 comment:

Anonymous said...

what you are saying is there are two variations to PCP 1. One with a dull effect and one with a photo negative effect when viewed at an angle. Also two variations to the PCP 11 stamps some with the effect and some without depending on darkness of the colour.

So why are these PCP 1 and PCP 11 stamps not catalogued as such? It would make life much easier

ie

PCP 1 PHOTO NEGATIVE EFFECT
PCP 1 NO PHOTO NEGATIVE EFFFECT

PCP 11 PHOTO NEGATIVE EFFECT
PCP 11 NO PHOTO NEGATIVE EFFECT

Perhaps it is time for catalogues to be updated