• Obverse: Depicts a stylized hibiscus flower (Hibiscus rosa-sinensis), the national flower of Malaysia, with BANK NEGARA MALAYSIA above.

• Reverse: Displays the denomination 20 SEN with the year 1988 below.

• Composition: Copper-nickel.

• Weight: 5.66 g.

• Diameter: 23.5 mm.

• Edge: Reeded.

Historical Insight:
The first series (1967–1988) was the foundation of modern Malaysian coinage, following independence in 1957. The adoption of the hibiscus design in 1969 emphasized national pride and unity. By 1989, the design was updated for the second series, making the 1988 issue one of the last coins of the first era.

Collecting Note:
The 1988 20 sen marks the final year of the first series, which adds significance for collectors — it represents the transition point before Malaysia moved to its redesigned second series coinage.