Signal Box Internal. Signal Diagram
![Great Ponton, Lincolnshire in Mar 1972 - J.J. Smith [060323]](https://www.bluebell-railway-museum.co.uk/archive/photos2/060/323.jpg)
Photographs
Great Ponton, Lincolnshire in Mar 1972 – J.J. Smith [060323]
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| Size / Type | Digital Download – Personal use, 6" x 4" Photo Print, 9" x 6" Photo Print, 12” x 8” Photo Print, 15" x 10" Photo Print, 18" x 12" Photo Print, Digital Download – Commercial use |
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Bluebell Railway WC class 21C123 ‘Blackmore Vale’ & Bluebell Railway U class 1618 at Horsted Keynes, West Sussex on Monday 13 Apr 1981 – R.C. Riley [105460]
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![Bluebell Railway WC class 21C123 'Blackmore Vale' & Bluebell Railway U class 1618 at Horsted Keynes, West Sussex on Monday 13 Apr 1981 - R.C. Riley [105460]](https://www.bluebell-railway-museum.co.uk/archive/photos2/105/460.jpg)