This marking is a hallmark?

Hello, I was offered this vase, but I didn’t have the opportunity to see it in person. Is this marking a Chinese or Japanese hallmark, please? Do you believe this item is solid silver? Thanks

I bought the vase, I had access to it yesterday and unfortunately it is not silver, just plated.

Today I had a surprise, I was looking at this vase and I thought it didn’t make sense all the work someone had to do to make it and it was a silver-plated item. I had thought it was silver plated, as I saw reddish sparkles on the edges and I hadn’t tested it previously. I tested for silver and it is low silver, I believe 400 silver, this completely changes the value and impressions of the item.