There are 4 styles in the Westclox Scotty Pocket Watch Style Series
Long pendant, oval bow, dial says "Westclox" but not "Scotty"
1945
Short rectangular pendant, bow has curved top and straight bottom, dial says "Westclox" and "Scotty"
Dec. 1945 - 1957
Short pendant, bold numerals. First has same hands as Style 2, then has dauphine minute hand, alpha hour hand.
1957 - ca. 1973
Trapezoidal bow, straight-sided crown.
ca. 1974 - ca 1990