Stanley Bailey Types 1-20 (1867-1967) How many patent dates do you see behind the frog? 0 1 Types 1-8,15-20 Types 13-14 Do you see a raised ring surrounding the knob receiver screw hole? Yes Types 1-8 Types 15-20 Yes Type 14 (19291930) No No Type 9 (19021907) Type 13 (19251928) Small Type 10 (19071909) Type 11 (19101918) Large Type 12 (19191924) Types 15-19 Raised rib on toe (front) and heal (rear)? Type 20 (19621967) No Type 15 (19311932) Yes Types 16-19 Is the lever cap back recessed or simply flat? # of patent dates on the lateral adjustment lever? "STANLEY" imprinted vertically on the lateral adjustment lever? Recessed 1 Types 1-2 2 3 Type 8 (18991902) Is the frog receiver a broad rectangular area with an arched rear (toward the tote)? Type 5 (18851888) Yes Type 19 (19481961) No Types 3-4 "BAILEY'S PATENT" "AUG. 31, 1858, AUG. 6, 1867" on the depth adjustment nut? Yes Yes Types 5-8 Flat Large (1 ¼") or small (1") depth adjustment nut? Is the bed painted blue? Yes Types 1-4 Types 11-12 Is the "frog rib" enlarged & arched? No No 3 Types 9-10 Do you see a raised ring surrounding the knob receiver screw hole? No Do you see the plane size # in the bed? 2 Types 6-7 Types 16-18 Does the depth adjustment nut have a diagonal knurling on it? Is "BAILEY'S PATENT" "AUG. 31, 1858, AUG. 6, 1867" stamped into the depth adjustment nut? Yes Type 18 (19461947) No Types 16-17 No Yes No Yes No Type 1 (18671869) Type 2 (18691872) Type 3 (18721873) Type 4 (18741884) Type 7 (18931899) Yes Type 6 (18881892) Do you see cheaper wartime features like a painted handle (black or red), steel or rubber adjustment nut (not brass), or heavy bottom castings? Yes Type 17 (19421945) No Type 16 (19331941)