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Highest price over estimate

Aston’s, Dudley, July 12

Prototype Ensign Multex Mk II CRF Camera by Houghton Butcher c.1936-38

Estimate: £250-350

Hammer: £16,500

Aston’s, Dudley, July 12

Spy camera disguised as a working, hand-held battery powered lamp

Estimate: £60-80

Hammer: £2900

Bellmans, Billingshurst, July 14

Calcutta Surveyed during the Years 1887-1894, a hand-coloured map folded on linen, within half morocco and cloth covers

Estimate: £80-100

Hammer: £1700

Top selling lots

Spink, London, July 12

Original back copy of the telex notification from Allied headquarters in Rheims to Winston Churchill in the War Rooms announcing the unconditional surrender of Germany, May 7, 1945

Estimate: £8000-10,000

Hammer: £14,000

Roseberys London, July 17

Pair of platinum, sapphire and diamond cufflinks, signed Cartier, Paris, c.1930

Estimate: £3000-4000

Hammer: £6200

Special Auction Services, Newbury, July 17

Victorian mahogany cased biunial magic lantern, probably by Wrench & Sons

Estimate: £2000-3000

Hammer: £5800

Source: Bid Barometer is a snapshot of sales on thesaleroom.com for July 12-18, 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 thesaleroom.com

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