This pic shows another style of Bullers cable tops alongside two 6 inch Bullers 'Hewletts'. I saw at least a dozen of the 'Hewletts' in the air and it is known that they come with the early impressed stamps plus later ones in the late '30's where a lovely dated transfer mark is on them. I only know of these in the Dunedin area, but could be elsewhere in the Sth Island.