[Pat R]

Originally Posted by pat r

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Originally Posted by steve_a

below is (not mine) an upside down doc white. Since it is upside down the back should be from a column equal columns from the center. For instance, given columns abcd a typical a back would be a d when upside down. If we can match this back to a right-side-up player we have another data point on sheet width. If both players can be linked by a multi-column horizontal scratch that terminates in a side crop then i think algebra would give us the sheet width. Not a lot to work with here but i think there is scratch between "u" in subjects and "pi" in piedmont. Add in a few stray distinctive marks and someone might recognize it.

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Originally Posted by pat r

erick, i think steve is referring to the short mark i circled in red but you
had it in hand and got a better look at it than what can be seen in the
small scans.
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when you originally posted scans of this card i was looking at trying to
find a pd 150 subject with the mark i circled in black, it looks like it's
some kind of print mark.

Originally Posted by steve_a

i can confirm that upside down white & doyle have matching backs. It might not be super clear in the scans but i have both in hand and they match. This means that these two cards are in opposite positions, equal rows and columns from the center, sides, top/bottom, horizontal axis, etc. If we can link either of these two to a center/side/each-other via scratch we could make a lot of progress quickly. I look forward to seeing any scratches, neighbors, two-namers, etc that you have. Another piece in the sheet-size puzzle...

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Originally Posted by pat r

nice work steve,

doyle is on one of the sheets that has two different subjects with identical scratches indicating the back plates were used on two different fronts.

stone is a match for doyle and i think the sheet with stone on it would
have been the one that white was on because doyle is a 150 only subject
and white isn't, so we should eventually find a stone with the same partial
scratch that doyle and the upside down white have.

here's the sheet i'm referring to if you click on the link you can magnify it
and get a better look. We are still working on this sheet but i think the
cobb/tinker belongs on the right (back of sheet) not the left.

There are a few spots where the second subject with a matching scratch haven't been found yet and if/when a white scratch is found it will probably be a match to either pattee, reulbach or burch.

http://photos.imageevent.com/patrick...et%20c-d_1.jpg

Originally Posted by pat r

almost three years ago steve pointed out in this thread that the upside
down back of white matched up with a doyle back.

At the time i searched and couldn't find a doyle or stone (doyle and
stone share the same position on a plate scratch sheet) that had a print
flaw that is on the smaller portion of the second back on the upside down
white.

This doyle that sold on ebay recently has that mark.
14.jpg15.jpg
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so far doc white hasn't been found with a plate scratch but if
one is eventually found it should allow us to figure out the exact
size of this plate scratch sheet based off the upside down white.


If the link works it should be a scan of that sheet that can be enlarged.
https://photos.imageevent.com/patric...ts/c-d%201.jpg