The Ariston isn't quite as famous as its older sister the Aquarama (making it a firm favourite with boat hipsters everywhere), but most aficionados claim it as the superior model. For something first built in 1950, it's got a perfectly-proportioned body packed with sexy curves – think of it as the cougar of the boat world – and the mahogany deck's not bad either.

Over 1,000 Aristons have been built since its introduction in 1950, but you can guarantee there won't be too many in better condition than this one – it hasn't touched water since it was recently restored. The London Boat Show's already started, but bids are being accepted until the 13th Jan, so there's still time for the classiest impulse buy you'll ever make.

riva-yacht.com