HSM cards also include caricatures. Sonntag is widely credited with cards showing realistic embossed sets of coins, though the latter lack the logo, having just the printed initials H.S.M., and are judged to be by Hugo Semmler of Magdeburg for reasons given in that article. In fact there quite a few postcard producers with intials HSM:
Herbert Sydney Marfleet, Totland Bay, Isle of Wight (different logo)
Hugo Semmler, Magdeburg (if correct, initials only)
Hermann Sonntag & Co, München (this logo I believe)
Huecograbado de Santiago Mumbrú, Barcelona (different logo)
Huseini Stationery Mart Ltd, Mombasa (?)
