• Calder E

    Found by Robert Jamieson at the old Broadlie brickworks site in Dalry. Note the thumbprint to top right.

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  • CXL G

    Found Manuel Works, Whitecross by Hazel Wyle. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Calder

    Found in Falkirk. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works,

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  • Calder XL 3 – 2 1/2

    Found by Gordon Wyle at the Manuel Works, Whitecross. This example is not in my possession. Bonnybridge

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  • Bonnybridge 16

    Found at Drum Farm, High Bonnybridge. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder

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  • Calder

    Found at Drum Farm,Bonnybridge. This is a feathered brick. Bonnybridge Silica & Fireclay Co Ltd,

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  • Calder S 51

    Found at Drum Farm, High Bonnybridge. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder

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  • Bonnybridge Brand 1

    Found at Drum Farm, High Bonnybridge. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder

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  • Calder L 41

    Found by Eddie McLean in Glasgow. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick

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  • Calder 1/2

    Found at the old Ravenscraig Steel Works, Motherwell. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Octo 3 1/2

    Found at the old Ravenscraig Steel Works, Motherwell. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Bonnybridge 3 1/2

    Found at the Old Ravenscraig Steel Works, Wishaw. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Calder 22

    Found at the old Ravenscraig Steel Works, Motherwell. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Calder 23

    Found at the old Ravenscraig Steel Works, Motherwell. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Octo 41

    Found at the old Ravenscraig Steel Works, Motherwell. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Bonnybridge Brand

    Found in Glasgow. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works,

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  • 1 Calder

    Found Glasgow. Note the finger print to top right. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Bonnybridge H

    Found in Glasgow. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works,

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  • Calder

    Found in Glasgow. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick Works,

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  • – Calder

    Found at Ardeer, Ayrshire Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick

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  • Calder O o

    Found in Glasgow Note the thumbprint to top right. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge.

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  • Bonnybridge 18.8

    Found at South Queensferry. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick

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  • Bonnybridge 33

    Found by Martyn Fretwell in Corris, Wales. I am not in possession of this example. Bonnybridge Silica

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  • Bonnybridge 1915

    Found by Gordon Wyle at Bonnybridge. Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder

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  • 12 Calder

    Found at Kilwinning, Ayrshire Bonnybridge Silica & Fireclay Co Ltd, Bonnybridge. alt Calder Firebrick

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