They don't get any more authentic than this folks. After acquiring the oldest know pair of jeans in the world in 2003 — the Levi's "XX” jean, dated circa 1880 — the company is now ready to release a limited edition run based on the style. For those of you who don't know your denim history, the XX jean was the 501 before it was called the 501 (1890 was the first use of the well-known 501 style number). It got its XX moniker from a reference used in price lists back in the day meaning "extra, extra strong." Like the original, the Re-issued XX Jeans ($501; available late July) feature only one back pocket (a second back pocket was added to the 501 in 1901), two front pockets and watch pocket, a back buckle cinch closure and suspender buttons. Each hand-numbered pair will come in a hand-crafted wooden box with a leather handle and an engraved silver plate that reads "Levi Strauss & Co."