Finland

14th century  Finland was occupied by Sweden. 
1743  Part of the country was occupied by Russia. 
1809  The whole country was occupied by Russia. until this year,  Swedish hallmarking was valid in territory of Finland. 
1810  After this date, new hallmarking was introduced  (different from the Russian system): 
1.  state mark with the Finnish crown 
2.  date letter (A = 1810 A2 = 1864 A3 = 1888, etc.) 
3.  mark of fineness in lots or  zolotniks (13 Lots = 78 zolotniks =  812.5/1000) 
4.  maker's mark. 
1920  after liberalization. introduced in this year, the following fineness became standard: 
813H =  830/1000 
916 H = 935/1000