Authenticity of Japanese Silver Yen

Kenny, I am basically calling your name!

I cannot get better pictures because the coin is for sale, I do not own it at the moment. If it is real, it would be a great bargain find. But from experience, I know that Asian silver crowns that are too good to be true usually are.

I'm not Kenny and I don't really know, but it looks real to me.  

you could ask the seller what the weight is if it's not already mentioned

I'm Kenny, and I'm asking you to get better photos from the seller.

What I can tell you now is that I'm 25% confident that the coin is real; the lettering on the coin is too bold. My best advice is that you ask for edge images and see if the reeding is consistent.