Abstract: A security package for a collectible item including a substantially planar bottom portion having a retainer for holding the collectible item. An edge with a lower sealing contour is formed in the planar bottom. A substantially planar top portion has an edge with an upper sealing contour formed therein. The upper sealing contour is designed to mate with the lower sealing contour. A seal is formed by welding the upper and lower sealing contours. A stress contour is formed integrally with at least one of bottom or top portions. The stress contour operates to cause a permanent perceptible distortion in the security package after stress is applied to the seal.