About the Design:

Obverse
The arms of Namibia above the date, which is above the country name

Lettering:
UNITY LIBERTY JUSTICE
Year
REPUBLIC OF NAMIBIA

Reverse
Mopane Aloe (Binomial Name: Aloe littoralis) right with the denomination to the left

Lettering: 5c

Composition    Nickel plated steel
Weight            2.2 g
Diameter    16.9 mm
Thickness    1.2 mm
Shape            Round