The medal's obverse bears seal of the city of Philadelphia with two female figures flanking shield bearing plow and ship, scales of justice held high above. Above, PHILADELPHIA; below, UNITED STATED OF AMERICA; under seal, MDCCLXXXIX
The reverse bears wreath. Around, LES FRANCAIS DE PHILADELPHIE RECONNAISSANTS; in center field, A / A. THIERS. / POUR SERVICES RENDU / A LA / REPUBLIQUE / FRANCAISE / 5 SEPTEMBRE / 1873.
The circular medal measures 63.4mm in diameter and was struck in bronze. I know neither artist nor mint or mintage. Any further information would be welcome.