Salut!
Best wishes from Finland!
I try find my guitar first owner. Guitar is Elvis Costello Century of Progress model and number is 6/300. I found "nickname" Emi26 some Bretagne luthier forum and I think that he or she was a first owner. If somebody knows something I hope that you send me a email. Address is parta@me.com or pasi.raassina@gmail.com