Here is a Newfoundland Scott 268 (N.S.S.C. 253).
Newfoundland ran out of 2 cent stamps, so they took overprinted the 30 cent stamp to fill the void...While going through my Scott 268 stamps I came across some thing that was not quite normal with the over print.
Here below is the normal Scott over print stamp.

I looked through about 20 singles, about 2 plate blocks and about 10 blocks...Below is 3 normal blocks on the left and the variety highlighted by colours.
The
blue squares indicate what I call
"water drop" the
yellow squares indicate what I call
"cap" variety.

Below is an isolated pair as to see the variety I am talking about.


There is saying..One variety, maybe not a constant..2 varieties, probable constant..Three varieties, well you know.
Have a look and see if anyone else has this variety.
Robert