"His Grandfather's Watch" by N.R. Walker

This lovely novella tells the story of two couples two generations apart.  Alex Harper works at his family's antiquities shop appraising and repairing watches and clocks.  Callum Winter, a young man his age and new to town, brings in his grandfather's pocket watch to find out when and where it was made.  Alex discovers an old picture of Callum's grandfather and a mysterious man as well as an inscription inside the back cover and helps Callum track down the story behind them.  Callum's only living relative is his grandmother, who has dementia, but slowly the tale of the watch is revealed. 

This is the second story that I've read by this author, and I liked them both very much.  It's a tear-jerker, too, especially the final chapter which further explains the history of the watch.  69 pages (Kindle edition).