Levi's 501XX Valencia製 1997 model, 1955 model. Button stamp: 555 Color: Indigo This is a 1955 model made in Valencia. The top button 555 indicates it was manufactured at the Valencia factory in the USA between 1996 and 2003. The Valencia factory has closed, so these are considered to be of high value. This is a pair that will continue to age beautifully. Heavily repaired. The repairs alone cost tens of thousands of yen.