The S-655 is the replacement blade for the 270 mm Gyokucho Blue Hard, a double-edged ryoba pull saw with rip teeth on one edge and crosscut on the other, set up for careful work in hardwoods.
It has the same specs as the blade on the saw: 0.6 mm thick and nickel plated, with progressive rip teeth from 4.5 to 6.7 TPI and crosscut teeth at 10.2 TPI, impulse hardened to RC68 or more. The 270 has the coarsest teeth of the three, for bigger stock. When the teeth dull, fit a new blade and keep your handle.
Gyokucho saws are made in Miki, Hyogo, by Razorsaw Kogyo, which was set up in 1969 when it developed the replaceable-blade saw. Gyokucho Sangyo, its sales company since 1975, sells them.