"If you do want a very good Kyffin Williams landscape in this sale, you might be paying up to £20,000 or £30,000 for an example", Bonhams auctioneer Jeff Muse tells our Correspondent Carl Edwards.
"It is a lot of money, but I think what you get for your money is you get an iconic Welsh name, you get a work that will hopefully live with you for many years."
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Andrew Price joins South Wales Caving Club to venture into the deepest cave in the UK
Any drizzle this afternoon will subside to leave a largely dry evening. Clearer skies in the north overnight.
Police were called to several Tesco stores in Wales to deal with chaos at midnight. Huge numbers hunted for bargains in shops and online.