Newark had a thriving metal industry for decades - seems extremely unlikely to me that 'Newark Silver' has anything to do with Tiffany, their silverplate isn't particularly uncommon, and is of good quality, fully marked as Tiffany. While the 'Newark Silver' items may well have been made in New Jersey, there is also the possibility they were made in another Newark, or that it's just a trade-name, perhaps referencing the Newark Silver Mine in Nevada. Wasn't unusual for late 19th-early 20th century manufacturers of white-metal and/or plated items to mark their goods as some sort of 'Silver' - a few that come to mind are 'Potosi Silver' of Birmingham, England, referencing the Bolivian silver mines at Potosi in both their name and marks, Joseph Gilbert, also of Birmingham, used 'Argentina Silver', and Daniel & Arter used 'Japanese, Indian, Bengal, Brazilian, Laxey and Nevada - Silver' on their production; Standard Silver Ware of Boston, MA used 'Nevada Silver Metal', and Cattarauga Cutlery of Little Valley, NY and Raymond Mfg. of Muncie, IN both marked their goods as 'Yukon Silver'...
~Cheryl
From a 1906 wholesaler's catalog:
An 1896 advertisement:
From the 1908 Blue Book:
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