A detection system according to the present invention includes a control device that detects fraud conducted on a game table by using the image analysis result obtained by an image analysis device. In addition, each game token used in this detection system has a multilayer structure having plastic layers with a plurality of different colors stacked on each other, with a colored layer being provided at least intermediately, and white layers or light-colored layers (not illustrated, but may be any layers lighter in color than the colored layer) being stacked on two sides of the intermediate colored layer. As described above, this game token has a multi-layer structure including the colored layer, with the white layers or light-colored layers (not illustrated, but may be any layers lighter in color than the colored layer) being stacked on the two sides of the intermediate colored layer.

The metal alloy is a possible replacement for/alternative to cupronickel cladding material used on currently-circulating clad coins. In the preferred embodiment, the (steel) metal alloy cladding material comprises 73-77% iron, 22-26% nickel, 0.2-0.5% carbon, and 1-5% manganese. The cladding material has an International Annealed Copper Standard (IACS) conductivity of less than 2%, a permeability of approximately 1.0-1.1, and a hardness value of 50-70 HRC 15 T (Rockwell Hardness). In alternative embodiments, the steel alloy comprises a monolithic coin or a core that may be plated with other metals.

The metal alloy is a possible replacement for/alternative to cupronickel cladding material used on currently-circulating clad coins. In the preferred embodiment, the (steel) metal alloy cladding material comprises 73-77% iron, 22-26% nickel, 0.2-0.5% carbon, and 1-5% manganese. The cladding material has an International Annealed Copper Standard (IACS) conductivity of less than 2%, a permeability of approximately 1.0-1.1, and a hardness value of 50-70 HRC 15 T (Rockwell Hardness). In alternative embodiments, the steel alloy comprises a monolithic coin or a core that may be plated with other metals.

A management system includes a recording device recording an image of a gaming chip and an inspection device determining a type and authenticity of the gaming chip. The gaming chip has a multilayer structure in which both sides of a colored layer are sandwiched between light color layers, surface printing representing a type of the gaming chip is performed on outer sides of the light color layers, and an authenticity recognition mark is printed on the colored layer of an inside of the light color layers by an infrared absorbing material. A visible light camera photographs a visible light image of the surface printing, and an infrared light camera photographs an infrared image of the internal printing. The inspection device determines the type and authenticity of the gaming chip using the visible light image and the infrared image.

A management system includes a recording device recording an image of a gaming chip and an inspection device determining a type and authenticity of the gaming chip. The gaming chip has a multilayer structure in which both sides of a colored layer are sandwiched between light color layers, surface printing representing a type of the gaming chip is performed on outer sides of the light color layers, and an authenticity recognition mark is printed on the colored layer of an inside of the light color layers by an infrared absorbing material. A visible light camera photographs a visible light image of the surface printing, and an infrared light camera photographs an infrared image of the internal printing. The inspection device determines the type and authenticity of the gaming chip using the visible light image and the infrared image.

Provided is an inspection system that uses RFIDs to inspect articles such as valuables, and is capable of detecting that articles are present with an RF tag that cannot be read. An inspection system where products (9) with types capable of being specified by a weight difference are set as an inspection target, the inspection system for inspecting the products (9) provided with RF tags (8) on which information of the products (9) is recorded, and provided with: an RF reading device (1) for reading the information of the products (9) from the RF tags (8) of the products (9) placed on a placement platform (22); a weight measuring device (2) for measuring and recording weights of the products (9); and a management control device (3) for using measurement results of the weight measuring device (2) to ascertain a total weight of the products (9) on the placement platform (22). The management control device (3) is provided with a function for ascertaining the weights of the products (9) on the placement platform (22) based on standard weights of the products (9) from the information obtained from the RF reading device (1), measuring the total weight of the products (9) on the placement platform (22) by using the measurement results of the weight measuring device (2), performing a comparison between a calculated weight of the products (9) obtained from the RF reading device (1) and a total weight of the products (9) obtained from the measurement results of the weight measuring device (2), and estimating whether or not the totals of the number of the products (9) are matching.

Provided is an inspection system that uses RFIDs to inspect articles such as valuables, and is capable of detecting that articles are present with an RF tag that cannot be read. An inspection system where products (9) with types capable of being specified by a weight difference are set as an inspection target, the inspection system for inspecting the products (9) provided with RF tags (8) on which information of the products (9) is recorded, and provided with: an RF reading device (1) for reading the information of the products (9) from the RF tags (8) of the products (9) placed on a placement platform (22); a weight measuring device (2) for measuring and recording weights of the products (9); and a management control device (3) for using measurement results of the weight measuring device (2) to ascertain a total weight of the products (9) on the placement platform (22). The management control device (3) is provided with a function for ascertaining the weights of the products (9) on the placement platform (22) based on standard weights of the products (9) from the information obtained from the RF reading device (1), measuring the total weight of the products (9) on the placement platform (22) by using the measurement results of the weight measuring device (2), performing a comparison between a calculated weight of the products (9) obtained from the RF reading device (1) and a total weight of the products (9) obtained from the measurement results of the weight measuring device (2), and estimating whether or not the totals of the number of the products (9) are matching.

An inspection system inspects gaming chips each having a color or a display indicating a value on an outer surface in a state where the gaming chips are stored in a case in which a maximum of the number of gaming chips to be stored is limited, and a radio tag storing gaming chip information is embedded in each of the gaming chips. The gaming chips are stored in the case capable of containing a row of gaming chips stacked in a thickness direction, and the inspection system includes a reading device that reads the radio tag of the gaming chip in the case and acquires gaming chip information of the gaming chip and a determining unit that compares the gaming chip information with a maximum of the number of gaming chips storable in the case and determines an abnormality of the gaming chip in the case when the number of gaming chips obtained from the gaming chip information is different from a maximum of the number of storable gaming chips.

An inspection system inspects gaming chips each having a color or a display indicating a value on an outer surface in a state where the gaming chips are stored in a case in which a maximum of the number of gaming chips to be stored is limited, and a radio tag storing gaming chip information is embedded in each of the gaming chips. The gaming chips are stored in the case capable of containing a row of gaming chips stacked in a thickness direction, and the inspection system includes a reading device that reads the radio tag of the gaming chip in the case and acquires gaming chip information of the gaming chip and a determining unit that compares the gaming chip information with a maximum of the number of gaming chips storable in the case and determines an abnormality of the gaming chip in the case when the number of gaming chips obtained from the gaming chip information is different from a maximum of the number of storable gaming chips.

The invention relates to a valuable object (1) comprising a gold base body (2) surrounded by a protective layer (3). The protective layer (3) comprises at least one readable security code for identification and verification purposes. The invention also relates to a system and method for identifying and verifying a valuable object (1), having at least one readable security code (6) being assigned thereto. The security code (6) of the valuable object (1) is stored in a secure database (4) for identifying and verifying a valuable object (1).