My sweetie has a pair of boots he's worn on the playa a few times now and has recently discovered that they don't fit quite right anymore (and he's gotten a few new pairs that he likes better). That said, we think they would be EXCELLENT footwear for someone who is in need of a pair of good solid boots for the playa.
They are men's mid-calf, engineer-style (harness over the ankle), black leather boots, size 13 - although my sweetie says they run small and are probably closer to a size 12.5. They are in solid condition and have a ton of life in them (the tread is barely worn), but they have clearly been to the playa - that caked on dust? Yeah, that's not going away. We do not know the brand name, but they were purchased at a shoe store in San Francisco.
These are free to anyone who thinks they would use these boots ON THE PLAYA. I don't care if you're a newb or you've been to Burning Man 20 times...you should plan on taking these out there!

Much love!
-Havoc