My Nippon book has marks in it from page 74-98 not included. Looked at fake marks & not there either. Maybe your mark hadn't been found yet. It looks like it might be earlier mark as 1 flower used & mountain in my book. Later used more "M" mark. There were several different companies that made it. Might help identify it if we could see the item.

Thanks for your input, attached is Photo from
One plate. Hopefully this will help. :)

Beautiful! That is lovely & well done. Try Fukagawa, Arita,Japan in business 1880 to at least 1986. They use mountain & a couple of those lines under there so similar mark.Kovels'New Dictionary of Marks listed under misc. so hope that helps.