Previous answer is
Sou Tsutomu Kaneyoshi Chikuzen koku saku
Special feature : Chikusyu Jyu So Tsutomu was born at Fukuoka prefecture Syowa 2nd year and named Masaru.
At NBTHK Shinsakuto exhibition, he got a lot of prizes and after that Heisei 9th, he got the Mukansa sword maker which is the top ranking sword contest. He made a lot of swords like Sosyu style, Sukehiro utsushi wide Doranba hamon. Probably He made sword as a copy of Kiyomaro. This sword was made at the season which bloom white Ume tree.
Appraisal Quiz #246 (May 30th, 2013)
Who made this sword do you think ?
Hints. ※The picture will be enlarged
Blade length : 70.6 cm or 27.79 inches.
Sori : 2.8 cm or 1.10 inches.
Mekugi : 1
Width at the hamachi : 2.52 cm or 0.99 inches.
Width at the Kissaki : 1.60 cm or 0.62 inches.
Kasane : 0.96 cm or 0.37 inches.
Era : Late Edo period.
Shape : The blade is regularize but very thick (0.96cm)
with deep sori nice looking shape.
On both sides engrave Bo-Hi.
Jitetsu :Koitame had well grained with jinie attach beautiful texture.
Hamon : Niedeki suguha with ash and small ash work and sunagashi in Ha. Boshi is hakikake style.
Answer will be posted at next Appraisal Quiz.
(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)