Lionel Electric Trains Identification Guide Sub-Title
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This Identification Guide for Lionel Electric Trains covers the "Post-war Era" only from 1945 until 1969.

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Lionel Trains Block Signal No. 153 LIONEL TRAINS BLOCK SIGNAL No. 153

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Lionel Trains Block Signal No. 153 B Variation

Lionel Trains Block Signal No. 153The Block Signal No. 153 would change from GREEN to RED as a train approached. This was accomplished with the use of the No. 153C Contact that was placed beneath the track and changed the color of the signal indicator because of the weight of the train.
Early versions of this signal (1946-49) used 6 to 8 volt screw type lamps. To reduce the voltage to these lamps Lionel placed a resistor in the base of this signal. Later editions (1950-59) (B Variation) would use 12 to 14 volt bayonet lamps, so this resistor was not necessary. In 1957, Lionel for some reason made the post for this signal out of unpainted aluminum instead of sheet metal. This variation (C) is lighter than the previous varieties.

No. 153 Contact
Variation A with resistor in bacespacerVariation B without resistor in basespacerNo. 153 Box End

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