Macau 2 Patacas. Chinese SAR or still Portuguese?

This coin dated 1998 is designated as released under Chinese SAR ruling authority.  What is the reason it is designated this way?

The SAR came in to force in December 1999 so it is dated before the Chinese took back control of Macau.

Was it due to a release date of later than the minting perhaps? Just wondering why this comes under SAR and not Portuguese authority.

Many thanks

QS

This is because chinese culture and population is becoming dominant in the country.

Chinese population in Macau in 1998 is 94% and the chinese language became the official language 7 years before.

Transistion periods - for instance in neighbouring Hong Kong, the Queen disappeared off coins in 1992, 5 full years before the changeover and the British designs on coins, gave way to something more Chinese and Asian looking.

Not so sure about Macao, but they would have done the same. Portugal was a Republic from 1910, so no monarchs or governor generals and thus transistion would have been easier. Portuguese has always been a language, by Chinese is the first language and culture. Influence from neighbouring Hong Kong and the general preference of many Chinese to use English as their foreign language (The Chinese empire before 1910, used English on many of their coins and notes and it was the preferred foreign language to please Brits and Americans), means English was also a language in use in Macao. In the country many signs were trilingual (Mandarin or Cantonese, Portuguese and English).

I had no problem speaking English when in Macao in 2014.

I didn't explain myself very well.

What I mean is that this (and only this) coin dated 1998 is listed “on Numista” as under the “ruling authority” of SAR, whereas the other coins in the same series and dated the same year are listed under “portuguese authority”.

If you search Macau 1998 you will see that all coins are under Portuguese Authority, except this one. Even those in the same series.

Since Macau didn't come under the SAR authority until 1999, (after the date on this coin) should this coin not be listed under Portuguese authority, the same as the other 1998 coins in this series? 

Under international law, Macau is actually "Chinese territory occupied by Portugal" rather than a colony – a fact that most people are unaware of. Therefore, it is only natural that it is classified as Chinese coin rather than Portuguese coin.

Why aren't all the other 1998 coins then?