London – Bonhams Asian Art Week, which featured five exceptional sales of Chinese and Asian ceramics and works of art, achieved a total of more than £7 million. The top lot was an extremely rare and massive gilt-decorated grisaille and iron-red Dragon rouleau vase, Kangxi that sold for £406,800 in the Fine Chinese Art Sale on Thursday 7 November, more than four times the original estimate of £100,000-200,000.

Asaph Hyman, Global Head of Chinese Ceramics and Works of Art, commented, "I am delighted with the strength of these results. We are very proud to have offered such magnificent and rare pieces as the gilt-decorated grisaille and iron-red 'Dragon' rouleau vase. This season's sales have showcased some truly extraordinary private collections from the Imperial and export paintings of world-authority dealer Martyn Gregory to a special sale devoted to Ben Janssens, famously of Spink & Son and former president of TEFAF."

The Martyn Gregory and Ben Janssens collections are part of a growing momentum for Bonhams, with world-renowned dealers in Asian Art looking to the auction house to offer their collections. They join a roll call of remarkable connoisseur collections sold at Bonhams including Jules Speelman: Completing a Cycle, 60 years of Devotion, along with the Michael Goedhuis: Brush & Bronze sale, the Claude de Marteau Collection, the Robert & Jean Pierre Rousset Collection of Asian Art and the Roger Keverne Ltd Collection.

Among the other top lots of the Fine Chinese Art sale which totalled more than £4.4 million were:

• A rare polychrome enamelled and underglaze-blue Eight Buddhist Emblems Tibetan-style ritual vase, Benbaping, Qianlong seal mark and of the period which sold for £317,900, more than five times the original estimate of £60,000-80,000.

• A magnificent and very rare large famille-rose Dragon dish, Yongzheng six-character mark and of the period which sold for £254,400 (estimate: £250,000-400,000).

• A magnificent and rare gilt-bronze figure of Green Tara, Yongle/Xuande effaced mark and of the period sold for £190,900 (estimate: £150,000-200,000).

• A rare large blue and white fishbowl, Wanli six-character mark and of the period. Sold for £127,400 (estimate: £100,000-120,000).

The Fine Chinese Art sale included several remarkable collections from distinguished collectors and authorities in Asian Art. Highlights from the Martyn Gregory collection of paintings which made more than £1million in total, included:

• Attributed to Giuseppe Castiglione (Lang Shining,1688-1766), Portrait of Prince Guogong (1733-1765), sixth son of the Yongzheng Emperor achieved £165,500 (estimate of £80,000-120,000).

• LAMQUA (active 1825-1860), Portrait of the 'Hong Merchant', Houqua, circa 1850. Oil on canvas, framed. Achieved £121,050 (estimate: £50,000-80,000).

• Attributed to Jean Denis Attiret (Wang Zhicheng 1702-1768), Portrait of a Young Prince thought to be Yonghuang (1728-1750), Oil on Korean paper, in beaded giltwood frame and glazed. Achieved £95,650 (estimate: 40,000-60,000).

Also, on Thursday 7 November in New Bond Street, the Fine Japanese Art sale took place. Samurai · Snow · Spectacle - Japanese Art across Seven Centuries achieved a total of £891,072 with 93% sold by value. The top lot was a work by Konoshima Okoku (1877-1938) of Kyoto entitled "Family of Deers", Taisho (1912-1926) or Showa era, early 20th century which achieved £32,000. An oban tate-e print by Kawase Hasui (1883-1957), one of Japan's most important and prolific printmakers, Taisho era, dated 1925 sold for £28,160 more than five times the original estimate of £5,000-8,000.

Ben Janssens Oriental Art: From Spink to Maastricht which ran online from 1-11 November achieved a total of £419,891 with 100% sold by value. The sale was crowned by an exceptional turquoise-inlaid gilt-bronze figure of Vaishravana riding a lion, 16th century,Tibet, which achieved £30,720, more than double its estimate of £15,000 – 20,000. Another top lot included a gold-damascened iron case and cover from the 15th/16th century which sold for £25,600, more than five times the estimate of £5,000-8,000. Used as a practical tool by upper-class monks or nobles in Tibet, the case would help protect letters and manuscripts when transported on horseback.

Other highlights of Ben Janssens Oriental Art: From Spink to Maastricht were:

• An Imperial Cinnabar Lacquer 'Tao Yuanming' lobed oval box and cover, Qianlong six-character mark and of the period. Achieved £25,600, more than double the estimate of £12,000-15,000.

• A Jizhou 'Leaf' bowl, Song Dynasty achieved £20,480, more than twenty times the estimate of £2,000-3,0000.

• A Jade pendant, Huang, Eastern Zhou Dynasty/Warring States Period, achieved £19,200 (estimate: £12,000-15,000).

Earlier in the week, the two-day Asian Art Sale in Knightsbridge on 4 and 5 November presented more than 400 lots and achieved a total of £1,055,777 with 99% sold by value.

Highlights of the Asian Art Sale were:

• A boxed Imperial album of sixteen rubbings and woodblock prints from the Imperially inscribed Illustrations of Cotton, Yuzhi Mianhua Tu, Qianlong, circa 1770s achieved £51,835, more than 12 times the estimate of £4,000-6,000.

• A famille rose baluster vase, Qianlong seal mark and of the period achieved £34,560, more than three times the estimate of £10,000-15,000.

• A fine and large export silver tray, mark of Hung Chong & Co (1830- 1925), Shanghai achieved £23,040 (estimate: £4,000-6,000).

Running from 4-12 November was the Collector's Treasures: Asian Art Online sale which presented more than 170 lots, featuring a wide selection of porcelain, jade carvings, glass ceramics and decorative arts. The top lot was a selection of two white glazed bowls and two cream jars, Tang/Song dynasty which achieved £46,080 more than 50 times the estimate of £800-1,200. The sale was 99% sold by value.