This double edged flush cutting saw is made by Gyokucho.
Its blade is no. 1151 and it is 125mm.
This saw is very thin and flexible and has no setting on either side. It is a ryoba (meaning double sided). On one side the teeth spacing is 1mm apart and on the other side the teeth spacing is 1.3mm apart. This saw is ideal for fine and small wood work such as cutting off dowels, flush trimming joints and so on.