J Webber ( - ) is a painter. J Webber s works have been put up for auction numerous times, with realized prices surpassing estimated prices, varying from 434.85 USD for Boyds Rock Monmouthshire in 2004 to 873.89 USD for James Cook in this and his two preceding voyages, with the tracks of the ships under his command in 2005 , based on the size and medium of the artwork.