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Title: Signal crossing board, green/red reversible, used as seconda [Go to resource]
Description: Signal crossing board, green/red reversible, used as secondary signal by North Eastern Railway Crossing Keepers, round, 9'. License: http://creativecommons.org/licenses/by-nc-sa/2.5/ Subjects: signal crossing board Source: Science Museum Identifier: 2001-9526 Go to resource More Like this...
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