Vigier Guitars

Hi allI'm about to put my much cherished fretless Vigier Passion up for sale. I know it must be an early example as the serial number is 006 but what year waould it have been built? It's got actve circuitry, Delta Metal fretboard and, I suspect, a maple neck.Any extra info would be really useful as I bought this beautiful instrument secondhand in 1988. It's still in almost mint condition too! I'll post some decent photos as soon as I can.CheersRob

All what I can say it is that it is early 80', the date is written in the bridge pickup cavity.