It is without any doubts a coffee pot. A tall pot is always for coffee and and a short/low fat pot for tea.
1. The assaying mark, AK, the assayer 1879-1883 but unfortunately unknow to name. Assayed in Moscow 1881 (?) Fineness 84 zolotnik and riding St George, Moscow's town mark.
2. The maker's mark, the very well known company Hlebnikov in Moscow.
3. Hlebnikov's court supplier mark.
4. Latvia's (first republic) assaying mark from 1922-1940. The pot was reassayed in Latvia. Fineness 875/1000 (or 84 zolotnik).
5. Latvia's (first republic) warrant mark or state guarantee mark of silver from 1927-1940. This mark cannot stand alone. It must have as a "companion" number 4, the hallmark.
Note, the picture is now up side down.
