It shows a landscape of Ryōgoku bridge crossing over the Sumida river using Maki-e technique. It is sprinkled with metallic powders and pasted with Kanagai metal foil on the vermillion lacquer to create the picture.
The name “Ryogoku” means two countries in Japanese, it was named after the bridge built between Musashi country and Shimōsa country. The street found in the bottom of the painting is called Ryōgoku-hirokōji. It was originally a space for firebreak, but it soon became an amusement area lined with show tents and tea houses. The flags of show tents also can be seen on the opposite shore.
This sake cup seems to be from the set of the famous landscape series.
It is probably a gift from a superior.