exactly Gary , theres been conversations years back regarding this and im sure your were involved aswell Frank
The 4 mark was from the use of a gadget. More often found on Strathearn I doubt any of the Ysart's used it at Moncrieff. Hollister could well have had Strathearn pieces without knowing it, probably a list of his collection in Rakow or sale auction could potentially verify that.Page 20 and 21 of YSART GLASS book mentions the use of a 4 pronged punty iron (by Paul Ysart) on applied footed pieces and on bowls.
Enter key words