1854 AD., France, agricultural show of Aytré, engraver: H. de Longueil, silver medal awarded to Mr. de Bonnaventure.

France, Charente-Maritime, agricultural show (Comice Agricole) of Aytré, engraver: H. de Longueil, silver medal awarded to Mr. de Bonnaventure, Paris mint(?), 1854 AD.,
Medal (ø 41,8 mm / 37,00 g), silver, axes medal alignment ↑↑ (0°), plain edge,
Obv.: OLIVIER - DE SERRES / H. DE LONGUEIL , his bust facing left.
Rev.: COMICE AGRICOLE D´AYTRÉ / EXPLOITATION / RURALE / Mr. de BONNAVENTURE / 1854 , legends in and around wreath containing agricultural items, date below.
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Olivier de Serres (1539 – 1619) was a French author and soil scientist whose Théâtre d'Agriculture (1600) was the text book of French agriculture in the 17th century.
More on https://en.wikipedia.org/wiki/Olivier_de_Serres

Aytré is a commune in the Charente-Maritime department in the Poitou-Charentes region in southwestern France. Aytré is especially known for its long beach, which is easily accessible from neighbouring La Rochelle, or Les Minimes. The beach is flat and shallow, making it a good bathing spot for children, and an excellent spot for windsurfing.

Un comice agricole (translation: an agricultural show) is an assembly formed by the owners and a region farmers to exchange each of experiments to improve agricoles processes and, on the occasion of this event open to the public, make it festive by various events: flower parade, election of the queen of comice and her princesses, plowing competitions, fashion shows various mechanical (vintage cars, agricultural machinery).