It's the first Birkin ever made, Individually crafted for Jane in 1985, showcasing experimental aspects not viewed on later on designs, like a shoulder strap and closed pontets. The Haut à Courroies �?or HAC �?predated the Birkin and is considered its direct ancestor. Originally designed while in the early 1900s https://stearnsv429fhj3.bmswiki.com/user