Our favorite subject, we have been fascinated with the eccentricities of this exotic former British protectorate for many decades.  It offers all manner of interesting challenges.  Most stamps with few exceptions are readily available mint, but the used is somewhat more difficult to do.  The first postage due set contains some of the rarest stamps in the Empire.  One can have a lot of fun with the printing varieties on the first issue and the overprint errors on the first second and third issues.  Overall, you can build a quite interesting collection.