Book jacket design trend: the hole in the cover; (here, the watch face is actually on the endpaper, as you'll see from the picture below).
I like the sound of this book; The Watchmaker of Filigree Street by Natasha Pulley "blends historical events with dazzling flights of fancy to plunge readers into a strange and magical past, where time, destiny, genius - and a clockwork octopus[!] - collide."
"In 1883, Thaniel Steepleton returns to his tiny flat to find a gold pocketwatch on his pillow. But he has worse fears than generous burglars; he is a telegraphist at the Home Office, which has just received a threat for what could be the largest-scale Fenian bombing in history.
When the watch saves Thaniel's life from a blast that destroys Scotland Yard, he goes in search of its maker, Keita Mori - a kind, lonely immigrant who sweeps him into a new world of clockwork and music. Although Mori seems harmless at first, a chain of unexpected slips proves that he must be hiding something.
Meanwhile, Grace Carrow is sneaking into an Oxford library dressed as a man. A theoretical physicist, she is desperate to prove the existence of the luminiferous ether before her mother can force her to marry.
As the lives of these three characters become entwined, events spiral out of control until Thaniel is torn between loyalties, futures and opposing geniuses."