Stamp collector Hiroyuki Kanai specialised in the philately of Japan, Germany and the British colonies and he owned a unique collection of the Red and Blue Mauritius "Post Office" stamps (issued by the British Colony Mauritius in September 1847).
Stamp collector Hiroyuki Kanai specialised in the philately of Japan, Germany and the British colonies and he owned a unique collection of the Red and Blue Mauritius "Post Office" stamps (issued by the British Colony Mauritius in September 1847).