Hira-ganna Japanese Smoothing Plane By Oguma Torasaburou - 80mm

Smith name: Oguma Torasaburou(小熊寅三郎)

Steel: Carbon steel(Based on the feedback I'm getting while sharpening the blade, it feels like Blue Steel.)

Jigane(Iron part of the blade): Watetsu

Blade Width: 80mm

Blade length: 110mm

Blade thickness: The blade near the bevel(about 5.80mm)，Top of Blade（about 8.30mm）

Blade Weight: 385g

Blade Angles: 23°

Chip Breaker Width: 68mm

Dai manufacture: unknown

Dai size(length, width, thickness): 303mm 99mm 36mm

Total weight: 1350g

Manufacture Era: before 1960

Accessories: -

Additional Information: It has been lightly used and remains in good condition. The blade shows some spotting/rust, but it remains fully functional. This blade comes from a retired Miyadaiku in the Tokyo area. I have sharpened it, taking the bevel up to about 1,000 grit, and the ura (back) to about 3,000 grit. It will require further sharpening on your end before it is ready for use. The block is made of high-quality Japanese White Oak, though there is some minor warping due to long-term storage.

This is a rare 'Teruhide/輝秀' stamped hand plane by Oguma Torasaburo , an early-period work. Oguma Torasaburo  was a master blacksmith based in Yoita, Niigata, who operated his forge from the Taisho through the Showa eras. He was the eldest of four brothers—including Nisaku ( 仁作,second), Masao ( 政雄, third), and Toyokichi ( 登代吉,youngest)—all four of whom were renowned plane-smiths.