Chinese is traditionally read from right to left; this is preserved on the coinage of Taiwan. The first four characters (beginning from the right) are
zhong hua min guo, literally "middle kingdom people nation", but more commonly translated as "Republic of China". The next three characters are the numbers, in this case "eight ten four" meaning 8 x 10 + 4 = 84. Yes, the first numeral is an 8, not a 9. The final character is
nian, meaning "year".
Year 84 of the Republic of China calendar is AD 1995.
Coins of China, Japan, Taiwan and Korea all sometimes bear dates in this kind of format; some are read left to right, some are read right to left. Personally, I always look for the character
nian; it is quite distinctive (I've always thought of it looking like an old-fashioned telegraph pole). In shape it is unlike any of the other characters you're likely to find at the beginning of a date, and it always marks the end of the date. Find the
nian and you can then start to read the date.
This website is rather useful for converting dates in various calendars, as they are found on coins, to AD dates.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis