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Historical Stamp Inks Identification with a Portable Raman
Stamps are cultural heritage objects which give an amount of historical information that is invaluable. There is an increase in the amount of counterfeit historical inks; this is because historical stamps can hold a high monetary value as collector’s items. It is crucial that fraudulent stamps are able to be identified and removed from the market.
The following review utilizes portable Raman to identify the colorants which are utilized in stamps on a historical envelope from 1885. The i-Raman EX
® is a portable Raman device with a 1064 nm laser. In order to minimize the fluorescence of the ink that is overwhelming with a 785 nm laser, the i-Raman EX is employed in this study. ....

Kristen Frano , Biorad Knowitall , Vanessa Mayle , Christopher Kautz , Bw Tek , Biorad Knowitall Software , Image Credit , வனேசா மேல் , கிறிஸ்டோபர் கௌத்ஜ , பவ் டேக் , படம் கடன் ,