Not sure who would be testing your research skills,,but look at the foot of the vase !! The unglazed foot will tell you if it is modern or not !! No matter how one keeps their house,, that portion will collect dust and dirt even if just sitting around !! The shape tells me that this is a pretty modern vase !! After 1950 and likely newer than that !!
I can cross post and get other opinions if you wish !!
What does an unglazed or glazed foot tell you about the vase? Does unglazed indicate a newer vase? I would like any information you would like to share. thank you.