AUTHENTICITY DETERMINATION TOOL

摘要

PROBLEM TO BE SOLVED: To provide an authenticity determination tool that enables intuitional authenticity determination by visual inspection at a low cost.SOLUTION: An authenticity determination tool includes a transmitted beam observation part having: a right-hand circular polarization plate or a left-hand circular polarization plate; and a phase difference material coated on one surface side of the right-hand circular polarization plate or the left-hand circular polarization plate in a pattern. Through using the authenticity determination tool, an authenticity determination tool that enables intuitional authenticity determination by visual inspection can be provided at a low cost.