Tracking And Grouping Polar Bear Print Defects

[Pat R]

After talking with Jantz at the National about "plate scratches" that are found
on some of the Polar Bears I've been working on the Polar Bear scans I have.

Most of the "scratches are a fairly straight vertical line similar to a roller mark.
Shaw 2.jpg

However I have found a few angled horizontal lines similar to the PD 150's.
Moran - Copy.jpg

I'm not sure if any side by side subjects can be connected with these (so far all of the
subjects I have with the vertical and horizontal scratches are print group 2) but
I have found a large number (all print group 3-4 and 5 subjects) with print defects.

McQuillan - Hummel.jpg

These groups of print defects seem to occur in groups of three like the Bergen-Bradley-doolan missing the ie.
Bergen-Bradley-Doolan.jpg
Mathewson - Meyers - Pelty.jpg

There are also examples of different defects found on the same subjects.
Young - Conroy 1.jpg Young - Conroy 2.jpg

The subjects with the same defects would have been in the same sheet position on different sheets.

If you have any Polar bears with scratches or defects please post them in this
thread.