Rare pre-1900 "Hana" Painted Nippon Vase

I also checked out the fake back stamps from the Nippon Collectors site. One thing about this vase is that it's been in my family and has been passed down through the generations. It was my great grandmothers to begin with as far as I know being to first to possess it. The only living surviving child is now almost 100 years old; my aunt. However, my grandmother lived her entire life with my mother and my mother now lives with me and this vase has virtually "lived" in the china cabinet all of these years later. So without a doubt I know that this vase is at least as old as the 1860s to 1870s which is the span in years my great grandmother Rosalie first had the vase. The only thing I am unsure of at this point is if it was passed down to her or how she came to get it.

Also, I know that before the McKinley tariff all pieces imported from Japan did not possess the "made in Japan" mark but after the fact, it was law. So that is the reason this particular piece and due to it's age does not have that on it. However, I am still curious as to what I actually have and will check with Noritake for direction.

Thank you for your imput.