Guys, it's a dull fake!
The car was auctioned as an Italian made Iso Isetta, with Italian (IMO fake) documents proving it! But Iso never made a 4 wheel long-wheelbase version; and there are also BMW emblems!!! And that Moretti badge is around 1965-'66, when those beach-cars no longer were made.
What is astonishing is how people can trust those stories and pay so much money without asking for an expertise. Also, how it's possible that an auction house accept to sell those cars without investigating (even Google could be a good starting point).