Didn't find any, but came across the following apparent breaks in the NW corner of one stamp. It does appear to be a genuine frame break, as the corner between the two breaks seems to be slightly misaligned with the rest of the frame.
It is not listed by Gibbons in their Vol 1 9th edition.
Can anyone shed any light on this ? Is it a known but unlisted variety?
![Image](http://img117.imageshack.us/img117/7162/1dlilacpossibleframebrely2.jpg)