Hi Lim Swee --

It is a copper-nickel version of the 1920 Straits Settlement 5 cent coin. If your coin were in better condition, it would be worth a few hundred US dollars. But the condition is so poor, it is worth about $2 US dollars.

Here's one that sold for $8 on eBay:

https://www.ebay.com/itm/393715753352?hash=item5bab49a188%3Ag%3AIQQAAOSwDtVhfcUS&nma=true&si=Zhe%252B0Aw72N5WpvoSav4DPR0svqY%253D&orig_cvip=true&nordt=true&rt=nc&_trksid=p2047675.l2557

For more info about your coin, see this page:

https://coinquest.com/cgi-bin/cq/coins.pl?coin=8877