So here are my latest pictures. The first is under the microscope of a Piedmont 150 and the Blue Old Mill. The second is a scan of 5 cards at 1200dpi. From left to right: Blue Old Mill, Piedmont 150, Polar Bear, Piedmont 350, and Old Mill Black. The Piedmont 150 has a few microscopic black ink pigment areas just like the Blue Old Mill. So what do you guys think? Seems to match up with the Piedmont 150 better than the Polar Bear.
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Ron - Uncle Nacki
T206 Master Monster Front/Back Set Collector - www.youtube.com/unclenacki
T206 Basic "The Monster" Set
514/524
T206 Advanced "Master Monster" Front/Back Set
??
??/5258
COMPLETE T206 BACK SUBSETS
Old Mill Southern Leagues - Black Ink
48/48
Sweet Caporal 350-460 Factory 30 Full Color "No Prints"
28/28
NEAR COMPLETE T206 BACK SUBSETS
Polar Bear
245/250
Sovereign 460
50/52
Sweet Caporal 150 Factory 649 Overprint
31/34
Piedmont 350 "Elite 11"
9/11