This pin-set pocket watch was found in a Barcelona flee market. It appears to have been made by Dubois Freres & Co. They made Rosskopf and other types of watches in the early 1900's.

It has an interesting style of cannon on the percaline dial.

The cannon, etc is repeated on the back cover of the case:

The watch has a Rosskopf style movement. It's visible through the inner glass cover. Fortunately, it didn't need any repair work.

I am wondering about the cannon. The the image represent an actual gun or is it more a product of an artist's imagination of what a then-modern field gun should looks like?