My brother used to work in a convenience store and he like exchanging coins that he found rare or interesting with his own. Unlike the coins that I found in US, the pattern for each of the coin here is pretty consistent. we have 10 cent, 20 cent , 50 cent , 1 dollar , 2 dollars , 5 dollars and 10 dollars
From 70s to 80s
Notice that the back was Queen Elizabeth, 20 cent and 50 cent were written in Chinese character. 1 dollar and 2 dollars have a lion rather than alphabet 1 and 2.
From 80s to 90s
Sorry I don't have the 20 cents and 5 dollars from this era. The crown of the queen is definitely bigger. I don't know why, please explain to me if you know the answer.
From 90s - now
Here are the common ones that we see the most: We have change one side to alphbet only and the City flower Hong Kong Orchid Tree on the back.
Two rare coin that he found:
Out of many coins, I found two really special one:
I didn't know they existed before my brother showed it to me. looking at the date, it was the year HK return to China. I guess it was related.
It took me a lot of time and effort to take picture on both side of the coins and edit it. If you like my work, please upvote, Thanks!! I think people who are interested can do what I do, show us what the currency of your region was like and let me know, I will come and upvote.