This is a Mauritius Pre Stamp Full Letter from 1844.  It was sent from Port Louis, Mauritius to Bordeaux, France on 9/15/1844.

What makes this letter so special is not merely its age and condition, but the postal markings it has.  Most notable among these is the RED PAUILLAC TRANSIT Marking on the front!

The letter is long and all in French.

Please take care as this cover, while it is in fantastic shape, is still over 100 years old.

This item is over $100 USD so I will ship it using Priority Mail in the US, and Registered Mail overseas.  This is to ensure that it reaches you in a safe and timely manner, and includes tracking!