Help. Possible Taiwan coin [opgelost]

Whilst re-organising a small area of my collection, I came across the coin, which is in the original case as I bought it many years ago.
Looked through my Krause catalogue and through many pages of the Numista catalogue, but without success.

5 photographs added

Obverse side


Inscription below obverse


Reverse of coin


Inscription below reverse of coin


Motif on front cover

Thanks to anyone who can give me any information especially face value & Y# or KM#

From right to left, below portrait, symbols
? ? ? ? 六十五年 十 ? 三十一 ?
? ? ? ? 6 10 5 Year 10 ? 3 10 1 ?
6 10 5 = 65 and 3 10 1 = 31
also above portrait is 九 number 9 among lettering.

The inscription on the (token/medallion)'s obverse (with the bust) reads:
Above, from right to left: 'President ?? 9 ?? Commemoration'
Below, from right to left: 'Republic of China 65th Year (1976), October 31st'

It's most likely a commemorative medallion, hence the lack of face value and inclusion in the Numista and Krause catalogues; unfortunately I dunno what exact Chinese characters are being used in the ???s on the above inscription to know what is being commemorated. I suggest asking a native Chinese speaker.

Found it ...
https://en.numista.com/catalogue/pieces14890.html
Tokens: Taiwan
Chiang Kai-shek 90th Birthday Commemorative Silver Medallion