#backingsignal
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Backing signal . . . . . . #railway #train #signal #signalling #miniaturerailway #modelengineering #cardiff #caerdydd #cardiffmodelengineeringsociety #heathpark #parcmynyddbychan #greatwestern #greatwesternrailway #backingsignal (at Cardiff Model Engineering Society) https://www.instagram.com/p/CTKhyMVonMD/?utm_medium=tumblr
#railway#train#signal#signalling#miniaturerailway#modelengineering#cardiff#caerdydd#cardiffmodelengineeringsociety#heathpark#parcmynyddbychan#greatwestern#greatwesternrailway#backingsignal
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