I was searching for an answer to the following question, last night, but had no luck. Pertaining to booklet panes, are the panes without selvage not considered a proper pane?
For example:
My copy of Michel HB-70 is complete minus selvage. Would it be valued as a booklet pane, or 4 pairs?

Additionally, I read a number of posts for and against exploding complete booklets. Improperly stored booklets often damage the panes because they shift from side to side inside the covers. The end result is what you see on the top/right of this pane - flattened or "filed" perforations.
Because of this, I have decided it is better to preserve the perforations on the panes than the staples in the booklets. All of my booklets are, or will be, exploded.
Brian