I now understand the distinction between a margin imprint capture and simply a margin imprint single (much like a plate no. single for regular U.S. stamps, I guess). I don't know which is scarcer; in my own small collection of margin imprints, 11 out of 14 are captures. In any event, I'm happy with the stamp, blind perfs and all. It has a nice cancel, a margin imprint, and eye appeal for me. Here are my other non-capture imprints, which I also like:

