Found by Ian Suddaby on the site of the old Bonnyside Brickworks.

This example is not in my possession.

An oval or a circle with a diagonal strike or slash through it. ∅


Unidentified manufacturer.

Find location would suggest this is a James Dougall product.

James Dougall & Sons Ltd, Bonnybridge, Stirlingshire.

Alternative brickworks include:

  • Bonnyside Brickworks, Bonnybridge, Stirlingshire.

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