Joining the original five participants, Delheim, Groot Constantia, Overgaauw, Simonsig and Nederburg and the other 56 wineries at the Nederburg Auction line-up this year are 12 newcomers, rigorously handpicked by the auction selection panel, when a selection of just over 150 of South Africa’s best local vintages will be sold on 28-29 September 2012.