It existed during two fairly short periods : 1572 - 1596 and 1633 - 1638 .
Saxe - Coburg - Eisenach was a duchy within the Holy Roman Empire .
Saxe - Coburg - Eisenach existed during two fairly short periods : 1572 - 1596 and 1633 - 1638 .
Saxe - Coburg - Eisenach was a duchy within the Holy Roman Empire .