Was looking through envelope after envelope of O.H.M.S. perforated stamps...On other envelopes I found the regular broken pins, blind perforations, etc...Then I opened another envelope of 500 Scott 0269 O.H.M.S. stamps, and every single one was inverted..wow.
Below is a couple of pictures what I found...

Here is one stamp from a block to show the inverted variety.

Now all you know I always think out of the box....
I could identify 133 cancels out of 500 stamps..
Here is what I found.
CANCELSB.C.- 107----80.5%
ONT - 20-----15.1%
Que.- 3------2.3%
N.W.T.-2-----1.5%
Yukon -1-----0.75%
Looks like the majority of delivered stamps were used in B.C.
Just saying...haha
Robert
Wouldn't you know it, after I just posted this, I opened another envelope with
INVERTED O.H.M.S...500 more..Not checking it right now...haha