Excellent!!! Looks to be in really nice condition. I love these, especially the blueness of the ribbons, and the paulownia like you pointed out.
I think this is true of the majority of these - just the mark on the reverse of the paulownia suspension - BUT - I have seen one (Silver Rays) - that had NO MARKS on the suspension, so they could have been somewhere else that was not shown in the photos.
You've got my marks from the one example of the silver rays, but no document to put a year to that.
I hope to have pics. up this weekend - I got a late issue 7th Class Sacred Treasure with a mark on the suspension ball, but my eyes can't read it bare, I've gotta magnify it, so stay tuned for that one for your database!! ;)