Am not surprised. HK would surely not be an ideal place to keep a classic car, thanks to a mix of salt air, humidity, fairly high rainfall, and, so I've been told, for the better heeled who live in elevated areas 'up in the clouds' with all the airborne moisture that that entails.
1977 Datsun 2seater 2.6L 260z : $100,000 neg
Gorokan, NSW
https://www.gumtree.com.au/s-ad/gorokan/cars-vans-utes/1977-datsun-2seater-2-6l-260z/1282964540
1977 Datsun 260z
Was immaculated restored 18yrs ago and has been garaged ever since motor was rebuilt 15yds ago and has been going on a once a year drive since. Has minor rust in floor