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Firefly by Duple: SDM892F - John Summers & Sons - Guy Big J.
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Firefly by Duple: PDM 305 - John Summers & Sons - Leyland Octopus
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Firefly by Duple: FDM350 - John Summers & Sons, Shotton Steelworks, Flintshire - Leyland Octopus
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Firefly by Duple: ODM 813 - John Summers & Sons - Leyland Octopus
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Firefly by Duple: SDM897F - John Summers & Sons - Guy Big J.