The top right one does look like a Northern Song dynasty coin—a Xuanhe one made from 1119 to 1125, I would think. If you scroll to the very bottom of the link posted above, it should be in the last section with visible pictures. It looks like it can also be found here.
The other two look more like Tang Dynasty ones. Probably Qianyuan ones made from 759 to 762 (this one).
Although, I will make no call on authenticity, and I have no idea if they are Japanese copies or not.
The other two look more like Tang Dynasty ones. Probably Qianyuan ones made from 759 to 762 (this one).
Although, I will make no call on authenticity, and I have no idea if they are Japanese copies or not.



















