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Title: Semaphore signal arm with spectacle, green glass missing, ho [Go to resource]
Description: Semaphore signal arm with spectacle, green glass missing, home lower quadrant, Caledonian Railway. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: signal arm Source: Science Museum Creator: Caledonian Railway Identifier: 2002-7333 Go to resource More Like this...
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