E90-1s have plate scratches too!

[Pat R]

Originally Posted by tedzan

Pat

I fully understand what you refer to as "plate scratches". I've followed your posts regarding your Piedmont 150 analysis.
Furthermore, when I was a teenager, I worked as an apprentice in a print shop and I am familiar with printing practices.

I respect all the time & effort you have put into your T206 project. However, we are now talking about E90-1 cards. E90
cards were printed by a Lithographic firm in Philadelphia (1908-1910). The T206's were printed by American Litho (NYC)
and it's my understanding that state-of-the-art rotary off-set presses were used to print these cards.

I took the trouble of scanning Ebay's current listing of E90-1 cards. There are 178 unique E90-1 cards listed whose backs
are visible in this listing. Only 7 of these cards exhibit "ink streaks"....resulting in 3.9 %.

The grand total (of this group and the group noted in Post #36) is 386 samples. Only 14 of these cards have "ink streaks"
resulting in a mere 3.6 %.

I repeat: such a limited sampling (plus the varying characteristics of the "ink streaks") of these E90-1 cards certainly does
not make for a reliable (or scientific) method for attempting to determine valid sheet layout, or series structure ?


TED Z
.

Ted,
I don't see how where they were printed makes a difference. A scratch is a
scratch and where they were printed shouldn't factor into it.

Neither should the %. If enough scratches are found to connect them and
come up with a sheet or partial sheet layout it doesn't matter how many
cards you have to look through to find them. I have saved scans from quite
a few that are listed on ebay and there are a lot more than the seven you found.

I didn't want to go back and look through all of them but I did look through
a few pages and found twelve but I could only attach nine links.

http://www.ebay.com/itm/1909-E90-1-A...sAAOSw4shX60qP

http://www.ebay.com/itm/1909-E90-1-G...sAAOSwx2dYDj3P

http://www.ebay.com/itm/1909-E90-1-A...8AAOSw9IpX1Jsl
http://www.ebay.com/itm/1909-11-Amer...IAAMXQXZZReKdd

http://www.ebay.com/itm/1909-E90-1-A...sAAOSwnDZT99lV
http://www.ebay.com/itm/1909-E90-1-A...gAAOSwKrxUY311
http://www.ebay.com/itm/1909-E90-1-A...8AAOSwTA9X61yw

http://www.ebay.com/itm/1909-E90-1-A...AAAOSwu4BVoUuB
http://www.ebay.com/itm/1909-11-E90-...YAAOSwqfNXj~QP
I also don't follow what you mean by varying ink streaks, they were caused
by something scratching the surface it's not like someone drew a straight line
through the back plate.