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Top selling lots

Schuler Auktionen, Zurich, June 20

Peter Lanyon (1918-64), Tideway, watercolour on paper, signed and dated June 1964, 22½ x 2ft 6in (57 x 76cm).

Estimate: SFr2500-4000

Hammer: SFr30,000 (£20,500)

Martel Maides, St Peter Port, Guernsey, June 21

Lily Delissa Joseph (1863-1940), City of London Skies and Flowers (Roofs of High Holborn), c.1936, oil on canvas, 4ft 5in x 4ft 10in (1.35 x 1.46m).

Estimate: £6000-8000

Hammer: £22,000

JS Fine Art, Banbury, June 23

Lotte Laserstein (1898-1993), oil on paper, 2ft x 18½in (62 x 47cm,) label for Belgrave Gallery, 1987.

Estimate: n/a

Hammer: £15,600

Highest price over estimate

Sworders, Stansted Mountfitchet, June 26

Two Vulcan bomber R88 radar operator’s cameras.

Estimate: £150-250

Hammer: £6900

Dawson’s, Maidenhead, June 23

John Speed’s New and accurat map of the world, 1626, 15½ x 20in (39 x 51cm).

Estimate: £100-150

Hammer: £2800

Unique Auctions, Lincoln, June 23

Victorian ‘Napier’s bones’ calculating device.

Estimate: £40-60

Hammer: £1400

Most registered online bidders

986 Gorringe’s, Lewes, East Sussex, June 26

Source: Bid Barometer is a snapshot of sales on for June 21-27 2018.

‘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