Ryan... IMO the tiger stripe is not natural. It has been applied using the heat of a candle to scorch the wood. Do you see the grain pattern of the wood? See how it flows vertically around the grip eagle? I have a David Malsch with the same wood grain... but no post war applied candle stripes. They are doing this in Europe to increase the value of a piece.
Skyline Dive seems to be full on the spot. If you look at the grip you can recognize the stripe 1 is faint and only half and the stripes are totally missed within the region of the eagle.
Often grain and "tiger stripes" are confused in my opinion:
- Grain is a difference in color in the wood.
- While "tiger stripes" are the reflection of light by the wood: they appear to move when you rotate the grip. The reflection is stronger, the more light you use.
Here are a couple examples of "tiger stripes" of 2 SA grips, each shown in different lights.
I recognize that some "tiger striped" SA grips are real. As Herman stated, the real ones look almost translucent and they shift as you move them under light. The fake ones do not. I have seen a video of this being done with a candle and cannot now locate it. But here is a video on applying fake tiger stripes on a guitar using a torch... same process, different tools. This should give you an idea of what can be done to a dagger grip.