PARIS (AP).- 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 euro60 million ($79.35 million), an administrator of the artist’s estate said Monday. The couple for years squirreled away the staggering trove — which is believed to be authentic, but whose origin is unclear — in their garage on the French Riviera, said Picasso Administration lawyer Jean-Jacques Neuer. The cache, dating from the artist’s most creative period from 1900 to 1932, includes lithographs, portraits, watercolors, and sketches — plus nine Cubist collages said to be worth euro40 million alone, according to French daily Liberation, which first reported Monday on the discovery. Pierre Le Guennec, a 71-year-old former electrician who once worked for Picasso, and his wife showed many of the works to Picasso’s son Claude and other estate administrators in Paris in