A multi-technique approach for detecting and evaluating material inconsistencies in historical banknotes

作者：del Hoyo Melendez Julio M^*; Gondko Klaudia; Mendys Agata; Krol Malgorzata; Klisinska Kopacz Anna; Sobczyk Joanna; Jaworucka Drath Anda

来源：Forensic Science International, 2016, 266: 329-337.

DOI：10.1016/j.forsciint.2016.06.018

• Authenticity
• Microfade testing
• Ink
• Paper
• Counterfeit banknotes

The identification of forged and genuine historical banknotes is an important problem for private collectors and researchers responsible for the care of numismatic collections. This paper presents a research approach for detecting material differences in historical banknotes through the use of microfading spectrometry along with other techniques such as hyperspectral image analysis, Fourier-transform infrared spectroscopy, and X-ray fluorescence spectrometry. Microfading spectrometry results showed higher sensitivity to light irradiation for an overprint ink used on a suspicious banknote relative to its counterparts. In addition, the spectrocolorimetric changes experienced by the paper substrates during microfade testing also provided a way for discriminating between two groups of banknotes. These variations have been confirmed after analyzing the spectral and physico-chemical data obtained using the abovementioned complementary techniques.

• 出版日期2016-9