Finland issued it's own stamps and had it's own postal service under the Russian Empire. It's currency was the Markka (subdivided into 100 penni)
Finland declared independence in 1917
(click on thumbnails for full res image)
Sent: 22/11/1911
Issued: 1906?
Salo
↓
Herra Arvi A. Karisto
Hämeenlinna
Sent: 30/11/1911
Issued: 1906?
Vyborg
↓
Arvi A. Karisto
Kustannusiike
Hämeenlinna
Sent: 19/12/1911
Issued: 1906?
Kauhava
↓
Kustannusiike
Arvi A. Karisto
Hämeenlinna