Anton Teutenberg had married German-born Nannchen Nicolai at Auckland on 28 September 1881, and they had three sons. He was naturalised on 3 November 1908. Teutenberg died at Auckland on 2 October 1933, aged 92, 13 years after Nannchen, who died on 1 February 1920.
As an engraver and medallist Teutenberg was without peer in New Zealand. His reliefs are always high, his strikings sharp, and his hand engraving remarkable in its fineness and beauty. As a sculptor he must be especially admired. His heads are lifelike and recognisable; his gargoyles beautifully grotesque. A large collection of material from his workshop, including dies, waxes, tools and test strikes, was presented in the 1960s to the Numismatic Society of Auckland.