diameter: 1 1/4 in. ( 3.1 cm )
Copper struck medal with obverse showing nude bust of Ericsson facing right with legend: "JOHANNES ERICSSON MACHINARUM INVENTOR/N.1803 O.1889." Reverse depicts steamship with legend above: "INGENIO ARTEMET MARTEM DIREXIT"; inscription in exergue: "SOCIO INCLUTISSIMO/REG.ACAD.SCIENT.SUEC./MDCCCXCIII."
Inscription: obverse, on bust truncation, at center: "L.A."
Inscription: reverse, at right of field, across border: "LEA AHLBORN"
Due to ongoing research, information about this object is subject to change.