Signature of John Sell Cotman is key note to £20,000 result
This watercolour bearing the signature of Norwich School artist John Sell Cotman (1782-1842) attracted a flurry of bids when it went under the hammer in Nottingham.
Reframed some 30 years ago by the vendor, the 8 x 12in (20 x 30cm) work was offered at Mellors &am…