Rick,
At the risk of seeming to be unduly negative, I don't think that is 'Los Osos'. Anyone who knew Norris Powell was aware of his tendency to leave certain details off his tags, most prominently 'x self'. Norris sold an unbelievable number of mottle-leaf Paphs that were labeled as either Maudiae 'Los Osos' or 'The Queen', seemingly far more than anyone could propagate by division.
Take a look at Bob Wellenstein's site (
http://www.ladyslipper.com/671j.htm ) for comparison. The dorsals alone seem to indicate that they are not the same clone.
Regards,
Rick