This is a pair of denim pants from the discontinued "Levi's 506" series, manufactured from the 1990s to the early 2000s. The number "506" is originally known as a jacket model number, but it is actually a very rare type that was produced as a pants model for only a very short period. Currently, it is rarely seen even in the vintage clothing market, and as a "Levi's known to those in the know," it is gaining popularity among collectors. ・Denim Color: Blue ・Model Number: 500s ・Model Name: 506 ・Button Back Stamp: "359" Thank you for your consideration.