Really, really great work Pat!!!

Test
 

Very nice

Donlin/Elberfeld
 

Here's another pair with the same plate scratches that indicate they were in the same sheet position on different sheets.

Here's one of the sheets I'm working on. The back plate was used on two
different fronts on this sheet so there are two subjects for each scratch
one is a SC 150 Fact 649 and the other isn't for each scratch so I think
it's possibly the layout for one of two sheets used for the 649 printing.

There are three different scratches or partial scratches on this sheet that
I randomly marked on the template I made. So far there is no way to tell
what vertical row each scratch was in or how many vertical rows there were.

The scratches in the bottom row are bolder than the other two and
easier to find but the two upper scratches are faint and hard to spot
so I'm still looking to confirm a large number of subjects in the two upper
scratches.

The X's on the template indicate if one or both subjects have been confirmed for that particular scratch.

This is just a work in progress so I'm sure there are mistakes but there is also good evidence for most of this sheet layout. There are a few examples where
more than one pair or group are in the same order on two different scratches on this sheet.

If anyone would like to check there PD 150's for the unconfirmed scratches
the template would give you an idea where to look for them for each subject.

The scans come up to small to see the detail so here's the subjects L-R
on the template.

Turner/Griffith (port)-Pastorius/Weimer- Criger/H.Davis-Hahn/Wilhelm-Murphy/G. Davis-Conroy/?-Lake/Williams-McKintyre/?-Goode/Powell-Hinchman/?-Bergen/Manning-Powers/Shaw-Konetchy/Liebhardt-Ganley/JJ Clarke-?/?-Johnson/Stovall-O'Leary/?

Re: Plate scratches
 

Awesome work, Pat; just awesome.

Thanks Ed,

I really need to thank Steve B for pointing this out and starting the two
threads on the plate scratches. It is a lot of fun doing the research and
has become an obsession for me.

I'm amazed at how far this has been taken. And really glad someone has picked it up. Making any serious dent in the monster has and will take the effort of lots of people. Not just to put together the data, but even just reporting one new find.

I'm also amazed it's been taken this far so quickly. Plating stamps took the guys that did it nearly their entire collecting lifetime, and that's with known plate sizes and blocks or strips readily available.

I'm also glad Pat has been linking front flaws with particular portions of the scratches. That's the next big step since that will lead to figuring out how many were in a column. And how many different sheets there were.

Steve B

This Cicotte scratch has a pink mark on the left below his belt. The plate
scratches indicate that Seymour is to the left (front) of cicotte so there
might be a small chance of finding a Seymour that is miscut left to right
with part of this mark.

Pelty/Young (portrait)
 

Another matching pair (same sheet position).