A retired French electrician and his wife have come forward with 271 undocumented, never-before-seen works by Pablo Picasso estimated to be worth at least 60 million euros ($79.35 million), an administrator of the artist's estate said Monday.

The electrician, who once worked for Picasso, and his wife for years squirreled away the staggering trove - which is believed to be authentic - inside a trunk in the garage of their home on the French Riviera.