Here is a veteran of world voyaging, made just after World War II.
Thomas Mercer is an old, respected firm in St. Albans, england that produced ships' chronometers from 1858 until the early 1980s. Here is a veteran of world voyaging, made just after World War II. It is #19149.
I acquired it from a seaman in Baltimore about 20 years ago. It had only the bottom if its box as removing the top for display purposes was common. Recently, I found a complete correct box so I have restored the instrument to a now complete unit. The Mercer plate is in place but with a different serial number. The glass has a slight chip and the works could use a light cleaning, but it keeps good time and I am confident it will serve you well. The case measures 7.25 by 6.75 inches (18.42 x 17.15cm) and comes with its original winding key.