This is a set of stamps used in Mauritius on Rodrigues Island. They are a collection of the B65 Cancels on Victoria issues. There are no covers recorded, unfortunately.
However, there are 27 stamps in all, including 4'Pence' issues. These are noted in the Stanley Gibbons Catalogue, but not separately listed. These are all VERY RARE. This is to ensure that it reaches you in a safe and timely manner, and includes tracking!