Italy
1883 Johann Jacob Baeyer (1794-1885). Commemorative medal of the general conference of the committee of the italian arc measurement in memory of the prussian general and geodesist Johann Jacob Baeyer 1883, D/ BUST RIGHT WITH JACKET, R/J.J.BAYERO QVI AD TERRAE MENSVRAS COMVNI STVDIO ERVENDAS NATIONVM SOLITIVM FACITAVIT ITALI LABORVM SOCII IN CONVENTV SEPTIMO ROMAE MDCCCXXXIII, Opus Gori Luigi. Ø 70 mm 193.00 g. A.Unc