South American Numismatic Postcard Printer

A Newman Portal user forwarded these images of a 1905 postcard featuring a set of South African coinage from 1890s. It is believed the card embossing was performed by Hugo Semmler of Magdeburg (Germany) as this matches other known examples of his work. The addressed side ("back" in post card collector parlance) is more of a mystery and seems to have been printed in South America. The working theory is that Semmler printed only the front site and then distributed these cards around the world, where local printers finished the cards. Can an E-Sylum reader identify the printer "A.H.H." noted here, perhaps from Uruguay?

Link to Eclectic Numismatic Treasure collection of numismatic postcards, featuring a number of embossed examples, on Newman Portal:
Eclectic Numismatic Treasure (Post Cards)(https://nnp.wustl.edu/library/imagecollection/511735)