A young Canberra lady has entrusted me with the task of working on her great-grandfather's 1927 Erika model 4 folding portable typewriter (serial number 81633). The Model 4 was introudced in 1926, not 1923, as noted elsewhere (the Model 3 came out in 1923).
The case it comes in has a sort of mock crocodile skin covering. The case has stickers from the famous Raffles Hotel in Singapore (noted for the Gin Sling) and German shipping company Norddeutscher Lloyd of Breman. Inside the case are the typewriter's original brushes. The Japanned paintwork is so shiny who can see your reflection in it.
These Erika portables were made by Seidel & Naumann in Dresden and sold in Australia as the Bijou. Although Bijous were taken to Egypt in 1915 by Australian military units, Prime Minister Billy Hughes, who used a lookalike Corona 3, briefly outlawed the importing company, Chartres, as an "alien" organisation because of the German origin of the Bijou. The Chartres family mostly imported and distributed Remingtons from the US, while the Stott family imported Underwoods.
The young lady's grandfather was German but apparently was in business in Thailand for most of his life. The brand name Erika comes from the grand-daughter of company founder Bruno Naumann.