Jacob Gillberg ( 1724 - 1793 ) was a Swedish painter. Jacob Gillberg s works have been auctioned off multiple times, with realized prices varying according to the size and medium of the artwork, for instance of 8627.74 USD for Porträtt av kung Gustav III (1746-1792) och drottning Sophia Magdalena (1746-1813) - 1 par in 2004