Hi
Someone is interested to sell this vase to me. I only have these three photos right now, I will add a photo of the bottom as soon as I receive one. Everything looks of qianlong period to me. If it is a fake, I would be a very well made replica.
Qianlong marks like this were also used during the republic period, the colors point more to that period than Qianlong in my opinion.
This looks very late Republic or PROC to me.
With out seeing the whole bottom it is hard to tell.