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Stephan Welz & Co in Cape Town, February 4

AR Penck aka Ralf Winkler (1939-2017), Colosseum, 1990, signed acrylic over silkscreen on canvas, 5ft 10in x 7ft 10in (1.8 by 2.4m).

Estimate: ZAR250,000-300,000

Hammer: ZAR260,000 (£14,700)

Tennants of Leyburn, February 6

George VI (1937-1952) gold proof set, 1937, five pounds down to half sovereign in fitted case of issue.

Estimate: £6000-8000

Hammer: £8000

Sutton Hill Farm Country Auctions, Leicester, February 1

17th century Gujurat mother of pearl casket, 6in (16cm) wide.

Estimate: £2500-4000

Hammer: £7200


Bamfords, Derby, February 6

A group of vintage Sindy dolls and outfits including a boxed Patch doll.

Estimate: £40-60

Hammer: £750

Adam Partridge, Macclesfield, February 6

An early 20th century high-fired Ruskin vase with mottled brown, cream and blue glaze, 1920, 6in (15cm), small hairline crack.

Estimate: £40-60

Hammer: £600

Mallams, Oxford, January 31

L’Academie Royale des Sciences, Paris 1780, seven volumes in full burr leather.

Estimate: £30-50

Hammer: £500

Source: Bid Barometer is a snapshot of sales on for January 31- February 6, 2019.

‘Highest price over estimate’ = Our selection of items from the top 10 highest hammer prices as a multiple of the high estimate paid by internet bidders on

‘Top selling lots’ = Our selection of items from the top 10 highest hammer prices paid by internet bidders on