Charles, Prince Of Wales (Later King Charles I, 1625-49). Electrotype Oval Uniface Medal / Plaque, 1616. 19th Century. After The Original Silver Example By Simon Van De Passe. 
 
Shield of the Prince within the motto of the Garter, signed below Si Pa fecit. Anno D 1616. Legend: ILLUSTRISS : ET POTEN : PR CAROLUS PRINCEPS WALLIAE DUX CORN : YOR : ET ALB : ETC. 
 
Reference: For an example in silver, see the Royal Collection Trust, item number: RCIN 443080.
 
In nice overall condition, some waviness due to the thin metal. An interesting study piece.