Consular Service stamps were used to pay a variety of fees charged by embassies and consulates in foreign countries. A series of embossed stamps was issued in 1885, followed by letterpress Key Type stamps in 1886.
Embossed set 25c to $20, and De La Rue hand-painted essays (SG).
1886 Key Type without surcharge.
1887 Key Type with Sterling surcharge — for Europe, Africa, and Americas.
1887 Key Type with Dollar & Cents surcharge — for China and Japan.
1906 Key Type with Rupees & Annas surcharge — for India (SG).