Image: © Giacometti Estate (Fondation Giacometti, Paris and ADAGP, Paris) 2017 Image: © Giacometti Estate (Fondation Giacometti, Paris and ADAGP, Paris) 2017

The piece, which were unearthed in the collection of the late antiques dealer Eila Grahame, had been estimated to sell for £40 000-60 000.

Three telephone bidders battled it out for the sketches which were signed and dated 1947.

Image: © Giacometti Estate (Fondation Giacometti, Paris and ADAGP, Paris) 2017 Image: © Giacometti Estate (Fondation Giacometti, Paris and ADAGP, Paris) 2017

Cheffins' Head of Paintings Sarah Flynn commented: ''Giacometti is one of the most revered and sought-after artists of the 20th century and we have seen interest from across the globe from museums and galleries as well as private collectors.''

The drawings have now officially been added to Giacometti's catalogue raisonné.

The proceeds of the Eila Grahame estate will be divided equally between the Art Fund and the Church of St Mary of the Assumption, Ufford.

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