I've lost my notes from the time, but may have been minor bust/hair details.
Please note that the (in)famous Bob Illsley "sourced" much of the South African Pretoria material. He at one time has ALL of the post-1902 matte proof sets, and one each (at least) of the gold patterns from the 1920s including 3d, 6d, florin, ??halfcrown. I managed to get the matte 1927 set, and then also the 1929 Wreath in proof, and several other pattern pieces. No provenances were provided. So Dolphin Coins at one time had massive connections to South Africa, but I have no independent knowledge of their knowledge as it were.