I think Rob is on to something. I've had them from 8 different locations
From Harry
from the Tampa , a graft from Harry
from fruitscapes Bokeelia??
form San Diego Leo Manual's yard, his Maha from thailand
from Gary in Palm Springs,Excalibur tree
my yard La Habra and my mom's yard La Habra, Excalibur, Harry's graft
from Simon's yard in SD
Harry's were the best