It is ironic that none three actors who portrayed Charlie Chan inthe film series proper, although playing the partiarch of a "multitudinous family," had no childern of their own! I believ ehtat this is also true of J. Carrol Naish who was Charlie Chan in the 1957-58 television series, "The New Adventures of Charlie Chan."
I also have the postage stamp mentioned. It's value as a Charlie Chan keepsake certainly surpasses that of its monetary value on the open market.