Stanley Type 1Type 2Type 3Type 4Type 5Type 6 Type 7Type 8Type 9Type 10 Type 11 Type 12 Type 13 Type 14 Type 15 Type 16 Type 17 Type 18 Type 19 Type 20 Bases Cutters

Type 12      1919-1924

**High front knob
   **Plane Size Cast in Toe behind knob
**”Bailey” Cast in Toe in front of knob
**Large depth adjuster nut (1 1/4”)  First Appearance
**Left handed depth adjuster nut
**Three patent dates behind frog
      — “MAR-25-02”
— “AUG-19-02”
— “APR-19-10″”
**Keyhole shaped hole in lever cap
**No logo on the lever cap
**Frog adjustment screw
**Just “STANLEY” On Lateral Adjuster
**Slightly longer rib on the back of the frog  First Appearance

**Note: 3 patents behind the frog and a large depth adjuster with a high knob would indicate a type 12.