Patek Philippe, Geneva, Commemorative Coin. Made in 1989 to commemorate the 150th anniversary of Patek Philippe Accompanied by a fitted box. Bronze coin inscribed: Patek Philippe - 1839-1989, Henri Stern, President, Philippe Stern, General Director, to all our friends at the occasion of the 150th anniversary of our manufacture. On the reverse: A simulated dial and two busts, one of Antoine Norbert De Patek, 1812-1877 and one of Jean Adrien Philippe, 1815-1894.