Medal by Wilkens.
Obverse: Olbers and Treviranus heads facing left
H.W.M.OLBERS 11 OCT 1758 GEST 2 MARCH 1840 G.R.TREVIRANUS 4 FEB 1776 GEST 16 FEB 1837
Reverse: still life from the Museum in Bremen
DEN DEUTSCHEN NATURFORSSCHERN UND AERZTEN DAS MUSEUM IN BREMEN IM SEPTEMBER 1844