The 112-16 is the replacement blade for the Silky Accel 160, the small folding saw that rides in a glovebox, an ATV kit or a coat pocket.
It's the same 160 mm (6-1/3 in) straight blade the saw comes with, with large teeth at 7.5 per 30 mm (about 6.5 TPI) for limbs up to about 2-1/4 in. When the teeth dull, fit a new blade and keep your handle.
Katsuji Miyawaki founded Silky in 1919 in Kishi, Japan, under the brand Tamakitsune, and all of its saws took the Silky name in 1983. The company is now headed by Uichi Miyawaki, and its saws are made in Ono, Japan.