• ESR

    Found on the site of the old Bonnyside Brickworks, Bonnybridge. Unidentified maker. The find location

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  • ESR G

    Found by Ian Suddaby on the site of the old Bonnyside Brickworks, Bonnybridge. This example is not in

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  • Glenboig ESR 138

    Found by Eddie McLean in the Glasgow area. This may also have been manufactured for a railway system

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