THE ERNESTINE DUCHIES OF SAXONY

The clearest illustration of the divisions and absorptions of the various Ernestine duchies can be found on the German Wikipedia site. A listing of them is here:

Saxe-Altenburg (1603 to 1672; 1826 to 1918)
Saxe-Coburg (1596 to 1633; 1681 to 1699)
Saxe-Coburg-Eisenach (1572 to 1596)
Saxe-Coburg-Saalfeld (1735 to 1826)
Saxe-Eisenberg (1680 to 1707)
Saxe-Coburg and Gotha (1826 to 1918)
Saxe-Eisenach (1596 to 1638; 1640 to 1644; 1672 to 1806)
Saxe-Gotha (1640 to 1680)
Saxe-Gotha-Altenburg (1681 to 1826)		 Saxe-Hildburghausen (1680 to 1826)
Saxe-Jena (1672 to 1690)
Saxe-Marksuhl (1662 to 1672)
Saxe-Meiningen (1681 to 1918)
Saxe-Römhild (1680 to 1710)
Saxe-Saalfeld (1680 to 1735)
Saxe-Weimar (1572 to 1806)
Saxe-Weimar-Eisenach (1806 to 1918)

Key identification notes:

SAXE-ALTENBURG
Pfennig

SAXE-COBURG-GOTHA
Thaler

6 Kreuzer

SAXE-COBURG-SAALFELD
1/24 Thaler

3 Pfennig

2 Pfennig

1½ Pfennig

1 Pfennig

1 Heller

SAXE-EISENACH
6 Pfennig

SAXE-GOTHA-ALTENBURG
1/48 Thaler

1½ Pfennig

SAXE-HILDBURGHAUSEN
1/48 Thaler

½ Kreuzer

¼ Kreuzer

1/8 Kreuzer

1 Heller

SAXE-MEININGEN
Thaler

Various smaller denominations

SAXE-SAALFELD
1 Heller

SAXE-WEIMAR
Sprüchdreier

SAXE-WEIMAR-EISENACH
1/6 Thaler

1/48 Thaler

Various smaller denominations