Alina M.
Yelp
Small museum located inside Hong Kong Botanical garden. I spent about 10 minutes at most, the collection really didn't interest me that much, but if you're a fan of old stamps and tea ware, and its rich history, then you'd probably love this place. They have tons of "security" and personnel everything, preventing you from taking photos. There is no admission fee, so I guess if you're nearby in Admiralty or Central or in Hong Kong park, it's worth taking a look quickly.
Currently, parts of it are undergoing renovations (December 2015), so maybe there will be something new later on. Fun fact, this is great in the summertime, for a quick cool down from the sweltering heat in the park.