Pneumatic Mail Machine Cancel Collection, over 150 covers or cards each with a pneumatic machine cancel, some covers with c/c, large number of types identified for each cover, only item removed was a type "Z10" which is offered separately in this sale, also included is reference material from the machine cancel society, one of the most complete groups of these we have seen, great for expansion and even possible completion, most are F-VF.

CV. 300-400