Sigismund II Augustus revolutionized the Lithuanian monetary system, basing it on an "kopia obrachunkowa": 1 kopa = 2 half kopa = 4 quarter kopa = 10 szostak = 15 czworak = 20 trojak = 30 dwojak = 60 groschen = 300 x 2 denar = 600 denar = 1200 obol. The basic coin, however, remained the Lithuanian half groschen, which you can find in our store. |