Per Krause 2012 version of 1901-2000, 39th ed., years of Y# 57 (
https://en.numista.com/catalogue/pieces30872.html) are as follows. Page is locked and does not allow changes. 1985 (1928), 1985 (1929), 1986 (1929), 1987 (1930), 1987 (1931), 1990 (1934), 1991 (1934), 1992 (1935).
I have 1990 (1934), you can see the dates clearly. Also, the Arabic dates used for the Gregorian dates are Malay Arabic, not the Arabian Arabic transcribed in the year comments. You can see this is the "4" used on my coin, so the comments should be fixed.


Will