Stamps with Thermochromic Ink Printing - Update

Category - Touch
Subcategory - Stamps with Thermochromic Ink Printing

South Korea 2005 Philately Week - Making a birthday cake with thermochromic ink

Issue date 3 August 2005

South Korea's Philately Week was held from August 3rd till 8th, when the 2005 Korean Philatelic Exhibition was held at the Pacific Hall at COEX.

The special stamp issued for Philately Week is a heat-sensitive stamp issued for the first time for South Korea. The color of this stamp disappears if heat is applied to the part where the thermochromic ink was used that is in the Checkered part and the P, B, D characters of the stamp, and the gift box, candles, and the dough at the selvage of the souvenir sheet are printed with thermochromic ink. The color disappears when one touches these parts of the stamp.  

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Stamps with Thermochromic Ink Printing


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