1889-1893 1894-1897 1899-1900 1901-1902 1903-1904 1905-1906 1908-1909 1910-1912 1913-1919 1920-1929 1930-1935 1936-1942 1943-1946 1888 1898 1 Eccentric Lever Material Exposed Height Knurling Material Thread Iron Engagement Lateral Lever Stamped Present Stamped "PAT.FEB.20.94" Brass or Brass with Nickel Plating Steel 19/32" 18/32" Gradual unsystematic reduction from 18/32" to as little as 14/32" in a few 2 3 4 5 6 7 8 1907 Stanley Number 18 & 19 Block Planes 9 10 11 12 13 14 15 16 17 Front Knob 13/32" or less Fine and Slanted Coarse and Vertical Brass with Nickel plating Steel Right -handed Left-handed Bent up end Circular Steel disc "STANLEY" on curved tail "PAT. FEB 8-76" "PAT. OCT. 21-84" "PAT. JAN 17-88" parallel to long axis Rear Adjusting Nut "PAT." " 2.8.76" "10.21.84" "1.17.88" "7.24.88" perpendicular "PAT." "10.21.84" "1.17.88" "7.24.88" "8.3.97" perpendicular "PAT." " 2.8.76" "1.17.88" "7.24.88" perpendicular "PAT." "8.3.97" Two piece, cast, articulated w/ U shaped slot Four piece, pressed steel "STANLEY" and "PAT. DEC 28,86" Unmarked on some planes "STANLEY" only "STANLEY" and "PAT. 2-18-13" Notched rectangle w/ Sweetheart and "U.S. PAT. 2-18-13" Head Rounded Head Thicker and Flatter Construction Lever Cap Stamped Lower End Lever Cap Screw 1947-1950 1889-1893 1894-1897 1899-1900 1901-1902 1903-1904 1905-1906 1908-1909 1910-1912 1913-1919 1920-1929 1930-1935 1936-1942 1943-1946 1888 1898 1 TmA.4 - "L. BAILEY'S" "PATENT" "AUG.6.67" "AUG. 31.58 EX'D" TmJ - "STANLEY RULE" "& LEVEL" "STANLEY RULE & LEVEL" all on single arc TmT - "STANLEY"; "RULE % LEVEL CO" "NEW BRITAIN, CONN" "U.S.A" 2 3 4 5 6 7 8 1907 Stanley Number 18 & 19 Block Planes 9 10 11 12 13 14 15 16 17 Iron Stamped TmT with "U.S.A" on same line as "NEW BRITAIN, CONN" TmV - "STANLEY" "NEW BRITAIN" "CONN." "U.S.A" in V TmY - curved form of Sweetheart TmAA - straight form of Sweetheart TmBB - notched rectangle containing "STANLEY" "MADE IN U.S.A" below Front Knob Boss Longitudinal Rib Frog Bed Cross Rib Slightly raised rectangle - 1/8" Raised to 1/4" Machined up to Frog with Lever Cap Screw Boss recessed Low rib w/ top edge below lat. Adj. lever Massive, slotted Smaller , slotted Supports Frog, top edge concave Supports Lever Cap Screw Boss Highest part toward Rear - Excelsior style Highest part near center, almost symetrical "Handy-y" machined depression Stamped Lower Left Side with "No 18" or "No 19" "PAT. 8.3.97" Cast behind frog "STANLEY" Cast in front of Knob "MADE IN U.S.A." Cast behind frog Castings tend to be thick and crude No. 19 No. 18 Sides General 1947-1950