The Hallmarked Man still does not not have a release date, but there is some news about at least one of the epigraphs from the author's tweets.
The quotation, in accordance with the Sark pictures and silver ship and bracelet already given as clues, comes from John Oxenham's 1910 novel, A Maid of the Silver Sea, a novel set on Sark during the 1830's, a period where the relatively isolated island was invaded by miners, many from Cornwall, seeking their fortune in silver mines. Happily for cash-strapped Strike fans, this book is free for the reading at Project Gutenberg. I downloaded it immediately and got through it in one evening, the tome being much shorter than any of the Strike books. Some interesting tidbits about the book, the author and what it might mean for The Hallmarked Man are coming up, after the jump.