you will find this medal in "Les Médailles dans l'histoire du pays de Luxembourg" Tome III by Raymond Weiller 1997 under number 13 (page 35).
This medal was engraved by Paul Kramer and published by the BCEE (Banque et Caisse d'Epargne de l'Etat) on the occasion of the 100th birthday of Grand Duchess Charlotte.
There are 3 different types: - Gold - 900 ‰ - 12.9 g. - 26 mm - reeded edge - Mintage: 600 ex. - Silver - 900 ‰ - 25 g. - 37 mm - smooth edge - Mintage: 700 ex - Bronze - 70 mm - Mintage: 500 ex
Regards
Sam
Referee for Luxembourg, Belgium, Germany 1871-1948, Prussia, Brandenburg, Nassau