1979 AD., Finland, Helsinki mint, 5 Markkaa, KM 57.

Finland, Helsinki mint (Rahapaja Oy (The Mint), Vantaa), engraver: Häiväoja, mint official Timo Koivuranta (1976-83), 1979 AD.,
5 Markkaa (ø 26 mm / 8,26 g), aluminium-bronze (Cu 0.93, Al 0.05, Ni 0.02 %), 8,00 g. theor. mint weight (?), mintage 2.005.000 pieces, axes medal alignment ↑↑ (0°), plain edge with incuse inscription: "REPUBLIKEN FINLAND * SUOMEN TASAVALTA * ",
Obv.: SISU // SUOMI / FINLAND / 1979 // K , icebreaker Sisu left on a sea of ice, date and country name in Finnish and Swedish below, mint official´s name at r. edge.
Rev.: 5 / MARKKAA , concave and convex stylized flock of birds flying r. and left, value number above, denomination below.
KM 57 .

Year / Mint Mark / Mintage
1979 K 2.005.000
1980 K 501,000
1981 K 1,009,000
1982 K 3,004,000
1983 K 8,776,000
1983 N 11,230,000
1984 N 15,001,000
1985 N 8,005,000
1986 N 5,006,000
1987 M 2,348,000
1987 N 660,000
1988 M 3,042,000
1989 M 10,175,000
1990 M 9,925,000
1991 M 9,910,000
1992 M 547,000
1993 M 911,000

As the Baltic Sea surrounding Finland freezes every winter a fleet of icebreakers is necessary. Icebreaker Urho, built by Rakentaja Oy Wärtsilä in Helsinki in 1975, along with its sister unit Sisu, serve on Finnish waters until today.