Abstract: There is provided a combination plug type lock for briefcases, purses and the like wherein the upper portion is disposed on the flap of a briefcase and includes an outwardly-biased element, the lower portion is disposed on the corresponding opposite part of the briefcase and includes a shackle which slidingly receives the upper portion and engages the outwardly-biased element during closure of the lock, and wherein a locking mechanism is disposed in the upper portion in the region of the outwardly-biased element.