Well, if we must run the full gamut of possible offenses of this coin, there's no signs of PVC damage either. I've inspected this under a 32X stereo scope and it's a very nice example, with few marks outside the 500 micron rim ding, which happened early in its history. Admittedly, it's hard to capture the colors on my camera, but high magnification reveals how the "wood-grain" alloying is beautifully toned in various colors. At 32X or 100X, there is no evidence of layered deposition that characterizes PVC damaged coins. While color is certainly subjective, in this case it's more indicative of the patina creating a "thin film interference" effect (also known as "rainbow toning"). Eventually, patina builds to the point where this phase-shift effect is negated, and the coin moves from RB to BN color.
That's my quantitative analysis, and I've more than adequately documented this coin for this board, lol! I've run it past a dozen collectors, and we think it will grade 63-64RB, including a one point strike for the rim mark. Btw, this is an early die state for the 1909-S VDB with a high reverse "wire rim" that was particularly susceptible to such dings.
I'll post more when the coin returns from grading.