Tom Robertson ( 1850 - 1947 ) was a British painter. Tom Robertson s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 545.05 USD for PORTOBELLO in 2004 to 195881.47 USD for Practising the Minuet (Miss Hilda Spong), c1893 in 2008 , based on the size and medium of the artwork.