Eko
Made in Italy. The solid 2-point mandolin on the left is from the 1980s or thereabouts, and if I had to guess (which I pretty much do) I'd say the doubleneck was of the same vintage. The white one was assembled later by Brandoni Guitars in the UK, which bought all of Eko's old parts and stock after Eko went out of business. The hollow ones below are probably from the '60s or '70s.