So the red stamps on the prints are ownership marks?
Typically the marks in red are the artist's seal. Publisher and censor marks would also appear on prints, but tend not to be red.
What exactly is Prussian Blue? The notes say simply that it's a synthetic pigment. Do you know any more about it?
Prussian blue is a synthetic pigment that is smoother and more well suited to printmaking than plant and mineral dyes.
Cool. That's why this print looks so rich and detailed. I love the depth of color
Yes, so did Japanese printmakers like Toyokuni II, Hokusai, and Hiroshige!
I'm sure it was very inspiring to have materials like this to work with.
Monochromatic blue Aizuri-e prints like this were a common form of ukiyo-e print.
The Berlin blue, or Prussian blue, while it was developed in the first decade of the 18th century in Germany, entered the Asian market by the mid 18th century. It took until the 1820s for the price to go down, and the material to become more affordable. That's when it became practical for prints!