The closest related entry found on this site so far involving a maker mark with two letters and a right facing passant lion psuedo punch: viewtopic.php?f=57&t=51837&p=165582&hilit=lion+right#p165582
Though some discussions have pointed to Canada (and a few others) for these lions, one entry identifies an early 1800's American maker using such device (stamped once and with his full last name). So the field widens.
How do we classify this psuedo. Is it a reversed Exeter? Are the clipped corners of any help? With so many smiths just repitiously punching their own initials as psuedos, why did this one invest in a second punch and only use his initials once? Theories?