Shogun Japanese Dozuki Tenon Pull Saw 240mm handles this is attributed to their

this is attributed to their oval-shaped top section

The "Tri Jack Pro" has three blades which lock in place:

This Henry Taylor Sculpture Tool has a medium-fairly deep curved profile (medium-fairly deep gouge)

1/2" radius approx

Shogun Japanese Dozuki Tenon Pull Saw 240mm handles this is attributed to theirA Shogun Japanese Dozuki saw used primarily for cutting tenon shoulders, crosscut work and general cabinet making. The blade has a steel back, fine teeth and a thin 0. 3mm blade that gives great accuracy. The blade is replaceable. Please select 'Dozuki Saw Spare Blade' to order a spare blade. Blade Length: 240mm Blade Thickness: 0. 3mm Teeth Per Inch: 20 TPI Blade Kerf: 0. 45mm