insulators as follows -- actual postage additional:

CD 121 BROOKFIELD - great deep green! VNM -- $5

CD 102 B.G.M.CO. (small dome number 2) -- large base chip -- $12

CD 133.2 No marking - Canada, amazing crude junky piece with lots of milk swirling! has a ping on the dome and a weird annealing fracture that runs around the dome top but does not seem to go all the way through the glass -- killer crude piece! -- $25

Or take all three for $35