This is yet another series of coloured cards, probably from a German printer. They are unusual because they have "Australian Aboriginal" on the back bottom left. As there is no connection with Australian Aborigines, this is probably a mistake in the customer's instructions or on the part of the printer.
Date Published: No dates are known.
Printing: Printed with three layers of lithography (reg, yellow, blue) with a black collotype layer on top for emphasis. Probably printed in Germany.
Identification: Picture side with a caption in white at the bottom left. Address side with "Australian Aboriginal" at the bottom left, and "A. Mather & Co., 93 LIverpool Street" at the bottom right. The words POST CARD are in unusually small font, and are but different between the two cards shown here!