Just came across this post. These are interesting coins that your dad has collected.
1997 was a significant year for Hong Kong, it was returned by UK back to China, you can see that from some of the coins. I was working in Hong Kong during that period, but wasn't aware or rather not interested in collecting coins. I don't know how many sets of these were issued back then and how much they're worth now. One set was listed on ebay for USD85
https://www.ebay.ca/itm/204039508777
btw, after reading @kerrislravenhill comment I now know these aren't coins 😀
Hi friend, never too late to receive your visit 😁 @livinguktaiwan
Jejejej si imaginate que pena, realizing that I posted coins and they were medallions, now it makes sense the black chain that came in the package and discarded.
I think I'm the only one posting necklaces or medallions thinking they are coins 🤪🤣.
Interesting to know that you and my dad were in the same place on those dates.
I do have many coins from China and Hong Kong, but I haven't published them yet, when I do I will tag you so you can see them and give me your approval.
I send you a hug.🤗