C.L.
GIESECKE . EQV . AVRAT . MIN . PROF . S . HON . S . D . A . HIB . R
. S &c. (Translation: C. L. Giesecke, Knight, Professor of Mineralogy, Honorary Fellow of the Dublin Society, Fellow of the Royal Irish Academy, etc.)
Obverse script
Reverse description
Polar bear on an ice floe, date below
Reverse lettering
HYEMES . VII. SUB . ARCTO . TOLERA VIT
. INGENTI . NATURAE . PERCULSUS . AMORE
MDCCCXVII (Translation: Impelled by a great love of nature, he endured seven winters in the Arctic)