After playing with different finishes and combinations of techniques to get a properly weathered effect, I think I finally got what I was looking for. The construction was not that difficult — I was unsure about the curved top, but even that came together nicely. This trunk gets a lot of hardware, so there will be a few more pics of the finished product.
Most of the wood in the trunk is domestic North Carolina white oak, which came from Scott at Quartersawnoak.com in New Hill, NC. If you are looking for some nice oak, check them out.