Medal 1799 Meeting the New Century, by G. Guillemard and F. Stuckhardt (signed GUILLEMARD / F.ST.F). Obverse: medallion portraits of Joseph II (Austria), Catherine the Great (Russia) and Frederick II (Prussia). Silver 39.0 mm, 13 g. Stroth. 1799-2; Mont. 2323; Diakov 250.1 (R3). NGC AU Details.