What was the face value of Mauritius "Post Office" stamps?

Orange red: one penny, Deep blue: two pence.

What makes Mauritius "Post Office" stamps rare?

First British Empire stamps produced outside Great Britain.

Where and when Mauritius "Post Office" stamps was issued, its face value and what makes it rare.

Mauritius "Post Office" stamps: country, year and face value
Stamp	Country	First issued	Face value	Known for
Mauritius "Post Office" stamps	Mauritius	1847	Orange red: one penny, Deep blue: two pence	First British Empire stamps produced outside Great Britain

Which country issued Mauritius "Post Office" stamps?: Mauritius.
When was Mauritius "Post Office" stamps first issued?: 1847.
What was the face value of Mauritius "Post Office" stamps?: Orange red: one penny, Deep blue: two pence.
What makes Mauritius "Post Office" stamps rare?: First British Empire stamps produced outside Great Britain.