Well guess I need to learn to use my eyes and wits more too I thought that the Geraint meant clearer image of mei...
I stand totally corrected, not gimei is my thought now that I know the correct translation. That Jyu Go that was correctly in the end just made me instantly count for a date.
I guess the next question will be which generation Musashi Taro Yasukuni made the sword?
Now I do believe that Musashi Taro means, Taro (honorary title) of Musashi province? And it seems that the title goes from one generation to another?
Reading from Sanmei about Munekuni and, He learned the true 15 fold technique with his younger brother Musashi Taro YASUKUNI from their master Omura Kaboku who had served exclusively for Echigo Matsudaira clan and then in his later period served for a Tokugawa Mitsukuni as a medical doctor
So there is only 1 Musashi Taro Yasukuni who studied under Omura Kaboku and uses the 15 fold technique, the 1st gen Yasukuni but he of course would have taught the skill to another generation, so therefore all three use the same signature and 15 fold technique?
Hawley's lists 4 Musashi Taro Yasukunis (so 3 generations excluding the one much later)
1st 1688-1730
2nd 1736
3rd 1736-81
4th 1848 (Musashi Taro Minamoto Yasukuni)
The Sanmai example was by 1st gen Musashi Taro Yasukuni.
There was one wakizashi by 1st gen Musashi Taro Yasukuni sold by Christies
By 1st gen Musashi Taro Yasukuni http://www.bonhams.com/eur/auction/20090/lot/8917/#
Here is one sword by 2nd Musashi Taro Yasukuni. http://www.kanetoyo.com/sell-wakizashi-7.html Couldn't see much difference in signature by my eye (maybe few letters look bit different) but year and the fact that it read in description gave it out.
Here is another Musashi Taro (Yasukuni), I trust NBTHK papers and Aoi-art, since I can't read the last one. He worked in Kyoho-period 1716-1736 but the signature is different from 1st and 2nd generations.
http://www.aoi-art.com/sword/wakizashi/11121-2.jpg
And now one question, which may be stupid. Since every Musashi Taro Yasukuni belonged in Omura style (wouldn't they have followed in tradition?) would they have made blades with pretty similar characteristics?
This is the wonderful world of nihonto, I can spend countless hours searching for information and no matter how much I think, I can't get any further. On the contrary just feel more stupid than in the beginning, so much new information learned today. The good thing about forums is that there is always someone with more knowledge who comes to save the say.