Engraving, some colour: [Membership Certificate] Operative Society of Bricklayers. Designed by A.J. Waudby. [c1866-1870?]. The figures Engraved by C.H. Jeens. Engraved by J.H. Le Keux. Printed by Bradbury, Wilkinson & Co. Farringdon Road, London EC. Issued Leighton Buzzard branch, March 1887. Platemark 58x45.7cm, sheet 69.5x51cm. Trade Union emblem with figures, inset scenes of gauge work, brick laying, brick making, assorted tools and props. In frame 74.5x56.5x2cm