Over the past decade, the port area has become more upscale as the shipping industry moves to docks on the north side. However, as the picture below shows it was a rougher place during the 1920s.
One of the industries in Leith was the Leith Flour Mills, owned by A. & R. Tod, Ltd. Most of the flour for the mill came from outside the UK—particularly from Canada—as the local wheat was too "soft".
The A. & R. Tod, Ltd. overprint appears to be surprisingly scarce, considering how many customers a large flour mill would have.