Secret auction, Art on a Postcard, is back for its fifth year, featuring some of the most collectable and interesting contemporary artists practicing today, such as Marina Abramović, Humphrey Ocean RA, Golucho, Volker Hueller, Rob and Nick Carter, Martin Yeoman, Minas Halaj, Vanessa Jackson RA, Vhils, Rebecca Salter RA and Maria Kreyn.
If you're not yet aware of the annual charity event, it's basically a unique opportunity to own a mini-masterpiece by an artist who would normally be well out of most people's reach. But you'll never know who you're bidding for, as all of the work is anonymous until after the sale.
You can get involved online at www.artonapostcard.com. Simply browse through the different works on display and choose your favourites to bid. Whoever bids the most, wins. The auction ends at midday on 15 November 2018.
Even better, Art on a Postcard raises money for The Hepatitis C Trust, so it's all for a good cause. You can see all of the participating artists here and see all the postcards via artonapostcard.com. In the meantime, here's a peek at some of our favourites.