Definitive Issue: King Edward VII First Definitive Series
This issue is part of what has been known as the 1902-1904 King Edward VII issue. It consists of a total of 10 stamps issued between 1902 and 1904. The watermark used is known as "Crown CA".
Definitive Issue: King Edward VII Second Definitive Series
This issue is known as the 1904-1910 King Edward VII issue. It consists of the same 10 designs of the 1902-1904 definitive, with the addition of two new values. The difference with the 1902-1904 design is the watermark used, which is known as the "Multiple Crown CA".