My oldest is my mom's old Mono Speedy 30 that she gave me. She bought it when I was little and it's about 17 years old now.
Of the bags that started out being mine, the oldest is my Mono Pochette from 2003.
My oldest piece is a yellow epi agenda from Sept of 1998, it's also the piece i've had the longest, i'm a revolving door of purses and accessories but this one has been around for over a year with me!
Mine is epi Noe2 (the large size) with 2 different colors(black on the bag with red straps). I bought her in 1997. She's still in pristine condition and still serves me very well. Because of her durability, I really adore the epi line.