Caption: The first and third GP7s built by General Motors in London, Ontario, TH&B 71 and 73 rest side by side at CP's Agincourt Yard on July 29th 1979. There are several subtle differences between the units, such as MU connection position, battery door louvers, paint differences, and train line/signal line. The 71 was wrecked less than 18 months later.
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