Two beauties walking in the rain

This type of print is called egoyomi (calendar prints), which cleverly incorporate hidden numbers as calendar markings. This print has numbers printed on the edge of umbrella. Wealthy patrons often privately commissioned egoyomi, eagerly exchanging them among the members of their literary circles. Harunobu was one of the leading print artists working in this unique type of print.
The same print is in the collection of the Harvard Art Museums/Arthur M. Sackler Museum, object number 1933.4.2646.