bailey wood plane #4 stanley rule and level co.

is a antique wood plane.Bailey #4, Stanley Rule and Level Co.New Britain, Conn.USA. PAT'D Mar-25-02 AUG-19-02.Wood handles are in good shape,no cracks.Looks like it has a brass adjusting knob.I have no Idea how old it is.Wouldn;'t the pat dates mean 1902?Looks like it has a brass screw holding the round wooden knob on.It is old and does need cleaned,dirty and surface rust.It is 9 1/4" long.5" high.2 3/8" wide.Ins is extra.