should be able to be dated by whatever words or symbols
are stamped into the edge, could you provide picture of description? If a medal
lacks any edge marks then it was struck prior to 1841, which is not applicable to this medal
which would have to be post 1871. I can say that the edge mark ought to be either a bee/abeille or cornucopia
, the bee giving a date of 1871-1880 the cornucopia
a date of 180-1950, effectively the entire duration of the Third Republic.
Oudine was active before 1831 (he won a prize for engraving in that year) but seems to have left the country at some point and returned in 1836 and worked for many decades. Prize medals engraved
by him were still
being struck, or at leat awarded, in the 20th century.
Usually these Ecole Millitaire medals are engraved
with the recipients name, date and what he won it for in the blank space between the two dotted borders on the reverse
. As this medal
lacks a dedication it would seem it is technically unissued.