Yes.Is that a usual way of writing the year? Calculating from the start of the era and adding the written number?
Mieji 20 is 1887.So Meiji 20 would be 1888?
Right. As written in English, those are debenture bonds.Some kind of a financial bond I guess.
The upper one is Taishō 9, i.e., 1920, and the lower is Meiji 40, i.e., 1907.It seems the documents are from the 1920.
For investment/money management, most likely.Any ideas on what they are and why would a person own them?