Can't decide? This one's fairly straight grained at the center, swirls near the edge, lots of color shift.

With a healthy douse of acetone, the color is closer to what it will be under the finish:
 

...overcome by the fumes, they swapped sides? Depending on what areas you pick, either one could be fabulous.
 
I know how important it is to get a better preview, but it still pains me every time I see a beautiful piece of coco bolo swabbed with acetone. Sucking out that amazing, orange-colored oil that makes this wood so special.
 
Okay, it's still going to be sanded, but I can't help thinking that you remove some from the surface, and the deeper stuff moves up to compensate, and you lose some. Sigh.
 
But I'm probably just obsessing, needlessly.

Good one, Bob.
 
They swapped sides because someone wanted to see what they would look like this way.  
 
 
Valentino

Bob; another subject I know absolutely nothing about and never even considered.  So, acetone swipes degrade the appearance???  It does seem to me that acetone swipes do give the customer a much better idea of what the bass will ultimately look like with a given piece of wood.

I wouldn't worry, except for the vapor (cough cough). Before you glue or paint an oily piece of Coco Bolo, you must clean with acetone or nothing will want to stick to it.

Thanks Mica!  Use in a well-ventilated area !