It was used in the semi-historical Cryptonomicon https://books.google.com.au/books?id=Lw-00wTgBy8C&pg=PA173&lpg=PA173&dq=cryptonomicon+turing+silver&source=bl&

It was used in the semi-historical Cryptonomicon https://books.google.com.au/books?id=Lw-00wTgBy8C&pg=PA173&lpg=PA173&dq=cryptonomicon+turing+silver&source=bl&ots=Cz2TIKD5U2&sig=ACfU3U0qwgwOd3GH9WPnXwtZyeVqHHkmBw&hl=en&sa=X&ved=2ahUKEwi73ezVm9znAhXBW3wKHTp3CecQ6AEwBXoECAwQAQ#v=onepage&q=cryptonomicon%20turing%20silver&f=false https://books.google.com.au/books?id=Lw-00wTgBy8C&pg=PA173&l...