that is a great scan, cannot do better
I was interested in the Manchukuo, stamp with overprint.
Only suggestion left, is to try and craft Professional style
"Still some more..." etc not required.
Better still to have "Unidentified China stamps"
and let the forum go to work
(Just a suggestion)
The more each of us put into thought with our threads
(and written text within the thread)
makes great benefit with searching this fabulous forum of knowledge.