ya, the brown sections are not soft as i cant scrape it with my nails, and the draw knife doesnt quite dig into it noticeably more than the whiter wood. the density doesnt seem to differ so much, though, there are some thin brown strips about a 1/16' wide at most, if not smaller, and they do not seem to be cracks. it does add a nice pattern to the wood though. pretty.
p.s. the money was found by some kid who was fishing or something along a newly dredged river in washinton, i believe, 20yrs or so later. i remember reading something about an older woman who, after her husband died, said that he resembled a picture of DB that she had seen, and the FBI analyzed a picture of him and he was remarkably similar to the sketch of him that was given by a stewardess.