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Set up by Leslie Illsley, Benny Sirota, and Jan Thompson, Troika was made between 1963 and 1983 at the Wheal Dream site in St Ives.

The eight-lot group at Lawrences includes coffin and disc-shaped vases and this 6in (16cm) circular piece with stylised symbols estimated at £80-120.

Contact 01460 73041.