Skyhigh (2nd generation) [c.1984-c.1996]
Built by HSBC as the house from their chairman. The SCMP has an article about it (http://www.scmp.com/article/695641/ex-hsbc-peak-house-bargain-compared-m...). Here's an extract:
Skyhigh, with its 360-degree panoramic views of the city, was the taipan house built on the instructions of former Hongkong and Shanghai Banking Corp chairman Michael Sandberg in the 1980s.
William Purves, who took over as chairman in 1986, sold it to Japanese department store tycoon and Yaohan International founder Kazuo Wada five years later for HK$85 million, a huge transaction that many believed was a windfall for the bank at the time.
Another five years later and the property was sold for 4.4 times that amount - HK$375 million, or HK$18,750 per square foot - when Wada was forced to sell Skyhigh to Pearl Oriental Holdings (now named Sun's Group) when his business empire ran into financial problems in late 1996.
Pearl Oriental chairman Wong Kwan had the mansion demolished shortly after buying it to make way for the building of five villas worth HK$120 million each.
I've guessed the demolition date based on that article - corrections are welcome.
Compradore has identified 1982 as the completion date in the comments below.