"Wabco E2, not sure of the year, so maybe one of you guys can identify that. The bell is aluminum and the back is all cast iron so I'm guessing 1950's?"
(comments)
MF: "Is only the back cap cast Iron, or the whole base section?"
ND: "The whole base section is cast iron."
MF: "Ok early 1950's then, the switch to all aluminum was around 1953."
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