清康熙 杏黃緞繡彩雲金蟒紋吉服袍

the rich salmon ground finely brocaded with eight large five-clawed dragons rampant amidst cloud scrolls in pursuit of 'flaming pearls', above crashing waves, mountain peaks, jewels, auspicious emblems and an undulating lishui wave border accented with ruyi heads at the hem and sleeves, the details further picked-out in gilt thread, with matching salmon-ground dragon cuffs and a simple thin salmon collar

According to the Huang-chao li-chi-tu shi (The Illustrated Precedents for the Ritual Paraphernalia of the Imperial Court), a catalogue of the ceremonial wardrobe, accessories and ritual trappings commissioned by the Qianlong Emperor in 1759, apricot-yellow robes were reserved for the Crown Prince. 
Compare the present robe with a very similar early 18th century robe in the Minneapolis Art Museum, illustrated in Robert Jacobsen, Imperial Silks, 1991, vol. 1, no. 32, where the robe is of the same colour and also 'collarless', indicating a Kangxi period date, c. 1710-1720s. See also a salmon-ground robe sold in these rooms, 8th October 2013, lot 3090.