Strain insulators as follows -- actual postage additional:

Larger (4") green strain embossed J.M.K.C. / MADE IN ENGLAND // B.I.C.C.L. / REG No. 639667-1914 -- great green and nice condition -- $25 (SOLD)

small (2 1/8") light gray strain - unmarked -- couple tiny flakes - $2

tiny green (1 3/8") - unmarked -- small flake -- $3 (SOLD)

unusual black glaze (2 3/8") -- recess embossed numbers 27-8593 (i think) -- no issues $5