Many of the differences that indicate the year(s) of production have to do with the trucks and couplers. Below is a guide to understanding these differences. Please be aware that not everything is created and usage begins on January first. Below is a guide, usage could begin or go longer than the dates shown.
TERMS


1945 – 1951
STAPLE END TRUCKS
1945
Die cast Staple end trucks with Flying shoe, with black fiber board, coupler head attached with one rivet, plain web on knuckle, black pin



1946
Die cast Staple end trucks with Flying shoe with brown fiber board, coupler head attached with one rivet, plain web on knuckle, black pin



1946
Die cast Staple end trucks with coil couplers, the coupler head is attached with one rivet and swedged (pinched) to the support, plain web on knuckle, black pin



1947 – 1948
Die cast Staple end trucks with coil couplers, the coupler head is attached with one rivet and staked (crosswise) to the support, plain web on knuckle, black pin



1948 – 1950
Die cast Staple end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing down, plain web on knuckle, black pin



1950 – 1951
Die cast Staple end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, plain web on knuckle, black pin



1952 – 1969
BAR END TRUCKS
1952 – 1953
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, plain web on knuckle, black pin



1954
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, engraved web on knuckle, black pin



1955
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, engraved web on knuckle, shinny pin



1955 – 1956
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, engraved web on knuckle, shinny pin, with uncoupling tab



1957 – 1958 & 1969
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, engraved web on knuckle, shinny pin, with uncoupling tab, with hole in drawbar



1969
Die cast Bar end trucks with magnetic couplers, the rivet in the center of the actuating plate is flared facing up, engraved web on knuckle, shinny pin, with uncoupling tab, with hole in drawbar, with copper tone parts



1948 – 1951
SCOUT TRUCKS
1948
NON OPERATING



The metal support that holds the side frames is smooth on the bottom.
1948
DUMMY



The metal support that holds the side frames is smooth on the bottom.
1949 – 1951
NON OPERATING



The metal support that holds the side frames has a rib on the bottom.
1949 – 1951
DUMMY



The metal support that holds the side frames has a rib on the bottom.
1952 – 1955
SEMI SCOUT TRUCKS
OPERATING



The metal support that holds the side frames has a rib on the bottom.
DUMMY



The metal support that holds the side frames has a rib on the bottom.
1958 – 1962
PLASTIC AAR TRUCKS WITH CLOSED JOURNALS

In 1958 there is a nub on the axle behind the wheels

In 1959 – 1969 the axle is pinched behind the wheels

From 1958 – 1959 & 1959 – 1969 the top of the side frame above the axle is smooth and complete

In 1960 there is a notch on the top of the side frame above the axle
OPERATING



NON – OPERATING



DUMMY



1963 – 1969
PLASTIC AAR TRUCKS WITH OPEN JOURNALS
OPERATING



NON – OPERATING



1959 – 1969
ARCH BAR TRUCKS
1959 – 1962
OPERATING



1959 – 1969
NON – OPERATING



1959 – 1969
DUMMY



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