Lincolns With Brown Lines?

mds... here's the link when I first posted it

https://goccf.com/t/129642

I'm building a set starting at 1909... :)

Peaceman... that's a good place to start... at the beginning

Dave, how do you distinguish your 1909 and 1920 woodies from coins with uneven toning or staining? Rolled in grease is another possibility. The yellow speckled woodies are easy.

Toning is different than the improperly mixed planchet. The woodie effect is caused by the alloys in the planchet not being mixed completly/thoroughly when the planchet is being made. The metals being of different compositions, show as streaks on the planchet. Toning occurs when outside environmental conditions react w/ the planchet, which actually causes the metal to oxidize... The three main components of toning is heat (temp.) humidity (wetness) and handling (being left in those conditions long enough for the metal to begin toning).

Here's another of my coins that has the wood-grained effect

The different metals that are combined to make the planchets have different chemical compositions & different color/appearance... When the planchets are rolled & punched, the pressure exerted "stretches" the metals, causing the difference in appearance. And yes, I believe the different metals would tone a different color

Dave your Indian looks more like its stained than a woody, IMO.

It looks like it might be. The banding on some coins is much more obvious than others.

52Raymo... in-hand, under magnification, the streaks look like like improperly mixed alloy, but the largest on the obverse has a purple tone to it...