Came across this:
HARLEY WLA MOTOR N.O.S. STILL IN ORIGINAL BOX.NEVER OPENED EXCEPT 3 BOARDS WERE REMOVED FOR DISLAY REASONS. THESE GO WITH THE MOTOR.
www.ebay.com.au/itm/HARLEY-FLATHEAD-45-WLA-N-O-S-KNUCKLE-PAN-MOTOR-BOX-RARE-RARE-/320926665919
I think it might have been purchased by someone from the states for it to come up like that.