I think Bagman's right - it's black Limba (Black Korina). The writing looks like "1 pc - H" to me. Their bodies are normally 2 piece, so that wouldn't merit a mark, while 1 piece would. Can't imagine what the "H" stands for, unless it's "Hollow"? You say it seems unusually light, which would be unusual for a BK body, but I can't imagine them hollowing out a piece that was nice enough to be a one-piece body. But, customers order strange things. I have a carved top Tele here that's Maple topped over Black Korina, then it was bound and painted Blue Ice. WTF? But, then I have a old-style VIP body that's curly Maple over Mahogany that's also painted, but I'm the one who painted it. While those woods sound special, they really weren't aesthetically pleasing examples of the species.