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A Belle Époque 18ct gold and rose-cut diamond necklace has a guide of £400-600 at Fellows in Birmingham on March 26. or see this item on

The mighty HMS Hood was sunk by the German battleship Bismarck in the Second World War. This rare silver and enamel sweetheart brooch above remembering the ship carries a guide of £80-100 at Lockdales in Ipswich on March 28-29. or see this item on

This Derby botanical part porcelain dessert service c.1800, above, comprises a sauce tureen with cover on stand, two crescent plates, three plates and circular dish, a shaped pedestal bowl, a shaped dish and a lobed shaped dish.

All are decorated with floral specimens (named to the underside) within deep orange borders, perhaps by factory artist John Brewer (1764-1816).

At Gardiner Houlgate in Corsham, near Bath, on March 26 the estimate is £300-500. or see this item on

This 6in (15cm) high silver and enamel presentation desk piece above, hallmarked in various places for Birmingham 1920, is modelled as a marine engine and gear box.

Titled Meadows to either side (for the Wolverhampton firm of engine suppliers), it is also inscribed Model by Hubert M. Brookes.

Last sold as part of a Goodwood auction in 1994, it comes for sale at Special Auction Services in Newbury on March 31 with hopes of £500-800. or see this item on

Posters promoting the 1981 Mardi Gras in New Orleans such as an image of Yoda sitting on a Bourbon Street lamp-post were not officially authorised by Star Wars creator George Lucas.

The movie mogul only became aware of their existence when Allan Trosclair (head of security for Lucas from 1981-85) visited the city that year.

Lucas, notoriously protective of the Star Wars franchise, was amused, however, and chose to not have his legal department pursue a case of copyright infringement.

This framed copy of the 22in x 2ft 4in (55 x 71cm) poster, signed in pencil Red Issue, 596/770, L Graff, has an estimate of £300-500 as part of the April 23 sale held by entertainment memorabilia specialist Prop Store of Rickmansworth, Hertfordshire, on March 26. or see this item on