Previous answer is
　 Muramasa 　

Special Feature : Muramasa was born and raised in Ise, Kuwana province.
He’s the son of Nosyu Akasaka Sahei Kanemura.
His swords, especially in terms of Hamon and Jigane, have a lot in common with Heianjo Nagayoshi,
they have a close relationship.
Muramasa swords are known as their high cutting ability and regarded as cursed swords,
because the grandfather of Tokugawa Ieyasu and his father Hirotada were killed with Muramasa,
not only that, When Ieyasu’s heir, Nobuyasu was forced to commit suicide, his beheader used Muramasa also.
For these reasons, the Tokugawa family disliked Muramasa swords and many Daimyo families erased
or altered the signature of their Muramasa swords.

==============================================
Appraisal Quiz #568 (December 14th, 2019)
Who made this sword do you think ?
==============================================

Blade length : 58.18 cm or 22.90 inches.
Sori : 0.9 cm or 0.35 inches.
Mekugi : 2
Width at the hamachi : 3.32 cm or 1.30 inches.
Width at the Kissaki : 3.00 cm or 1.18 inches.
Kasane : 0.61 cm or 0.24 inches.
Shape : Wide and thick blade with small Sori. The Kissaki is O-Kissaki.
Jigane :Itame hada well grained with jinie attach and chikei work
Hamon :Niedeki suguha active gunome with thick Nioikuchi.
There are sunagashi, kinsuji scatter in Ha.
The boshi is sansaku style.

Hints. ※The picture will be enlarged

================================================

Answer will be posted at next Appraisal Quiz.

================================================

(Please acknowledge not replying to mail about Appraisal Quiz by our convenience.)