It's a "Woodie" so to speak. Improper planchet mix leading to uneven toning and a wood grain appearance. Does this add any substantial premium given the coin is in about xf-ef?
Not that I know of. I'm one that really likes the woodgraining and if I was to come across one that was a woody and one that wasn't, and they were the same grade, I would go for the woodgrained one. I could see myself paying a little more for it as well. I think it's in the same school of thought as rainbow toned coins.
Ltrain, Woodies aren't really something that bring much of a premium in Canadian cents. My answer would be "no, a woodgrained 1916 large cent will not bring a higher premium than a properly mixed planchet".
