| 摘要 |
In a case of plastic material for a single marketable valuable piece as a coin, a medal, a precious stone, a pearl, a stamp or alia, made of two elements superimposed, one of which at least transparent and formed with a shell to lodge said piece, and connected at least all along their edges, the invention lies substantially in the fact that, between the upper and lower elements 1,1 min and 2,2 min , which are shaped as credit cards and enclose the piece 4,4 min with certification data, provision is made, in order to benefit of an absolute seal not only against counterfeiting but also against forced opening, of a delaminable security printing pattern in the form of a hologram 5 or of a multi-ink layer 5 min , which is anchored in a discontinuous way and gets visibly and irreparably lacerated as soon as an opening attempt is effected on the case. |
