Insulators as follows -- Actual postage additional:

U-1569A (partial incuse on top) NZI - beautiful glaze - previous collector marked on dome NZ 72.S - VNM -- $12 (Made by New Zealand Insulators) -- SOLD

U-1569 (partial incuse on top) G / NZI / 53 -- flat chip up the outer skirt -- $6 (SOLD)

U-1565 (skirt incuse) G.P.O. / 2 // Bullers logo / MADE IN ENGLAND -- VNM -- $10

U-1411 (dome incuse) NZI / M -- VNM -- $8 -- SOLD

Take all four for $30