Mame-ganna Japanese Mini Plane Blades By Natsumiyahisa

1: Round; - ; 10mm; 7g; 39mm; 24°; 1.7~2.3mm

2: Flat; - ; 9mm; 5g; 35mm; 25°; 1.7~2.3mm

3: Flat; - ; 10mm; 6g; 35mm; 30°; 1.9~2.8mm

4: Round; Kunihide ; 6mm; 1g; 23mm; 24°; 1.8~2.4mm

5: Flat; Kunihide ; 5mm; 1g; 22mm; 24°; 1.6~2.2mm

6: Flat; Kunihide ; 6mm; 1g; 23mm; 24°; 1.5~2.3mm

Manufacture Era: About 2000

Accessories：-

Additional Information:  Unused, in good condition. I purchased it from a tool collector. 

According to information I recently gathered from the web and Mr. Tsuchida, these blades were forged by the late Hisashi Natsumiya, a renowned blacksmith from Kiryu, Gunma Prefecture, who specialized in Mini planes (Mame-ganna).

He did not operate under his own brand; instead, he primarily produced blades for the 'Kunihide' and 'Yoshihiro' brands. It is said that his techniques also had a significant influence on the Metsugi blacksmiths.