PURPOSE: To cover the intention of concealing an identification mark, etc., to prevent forgery and to improve decorativeness by forming an ornamental multiple vapor-deposited layer or a hologram forming layer.

CONSTITUTION: This concealing seal is formed by successively laminating a multiple vapor-deposited layer 2 transmitting IR and changing the color of visible light with the observation angle, a concealing layer 3 transmitting IR and shielding visible light and an adhesive layer 4 for adhering the concealing layer to an object on a substrate 1. Further, the substrate 1 is provided between the adhesive layer 4 and concealing layer 3, between the concealing layer 3 and multiple vapor-deposited layer 2 or on one side of the multiple vapor- deposited layer on the opposite side of the concealing layer 3.