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This early-20th century silver and gold diamond floral tiara carries an estimate of £14,000-20,000 at Fellows’ Fine Jewellery auction in Birmingham on March 12.

The estimated total diamond weight of the old-cut and single-cut diamonds is between 16-18cts.

fellows.co.uk or see this item on thesaleroom.com

Lawrences of Bletchingley will offer an important collection of pocket watches formed in the early years of the 20th century on March 18.

The Francis Payne collection was the passion of a successful London-based consulting and mining engineer from c.1910-30 and has remained with his family ever since. Several pieces retain their original invoices from various leading retailers and auction houses at the time including the Hanover Street dealer and restorer Louis Desoutter.

The collection includes four watches by Breguet such as (No 2330) this quarter-repeating sapphire cylinder pair cased half hunter made for the Ottoman market. The gold inner and outer cases are both decorated in profuse guilloche enamel with floral scrolls on a claret ground.

Housed in a red morocco leather covered case by Desoutter, together with a Breguet key, it includes a Breguet certificate No. 2774, detailing the sale of the watch by Leroy Constantinople in 1811, and paperwork from Breguet detailing various 19th century repairs, carried out for SE Abraham Pacha. It also has a Louis Desoutter invoice, dated 1928, detailing the sale to Mr Payne together with various notes and labels attached suggesting a link with Sultan Sellim III.

Estimate £40,000-60,000.

lawrencesbletchingley.co.uk or see this item on thesaleroom.com