Insulators as follows -- actual postage additional

CD 143 MONTREAL TELEGRAPH // CO {MLOD} -- grooved base -- nice blue -- 1" area of flaking at the sharp base edge on the side and a small base bruise (see photo [id=779466508]) -- $35

CD 143 C.N.R. -- light aqua -- tiny flake under "R" -- $5

CD no embossing {MLOD} -- light green with some nice amber! VNM (tiny nibble at sharp base edge) -- $55 (SOLD)