Here are four insulators as follows -- actual postage additional:

CD 122 from Chile -- CRISTALERIAS / DE / CHILE // CTC / No. 16 / ART 4322 -- ridged base, skirt ping and shell fracture in wire groove -- $8

CD 122 from Chile -- CRISTALERIAS / DE / CHILE // CTC / No. 16 / ART 4322 -- ridged base, VNM -- $30

CD 501.1 from Uruguay -- S.A.F.N.V. / 22 // 1 -- nice green -- VNM -- $15 (SOLD)

CD 155 from Colombia -- dots around both front and back (unmarked TELECOM) -- great straw! clean flake out of skirt (see photo) and tiny base bruise -- $15