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Color shades have several different causes. The printer may use a different ink; in the early days, inks were made up in batches as needed, and were rarely consistent. In such cases, the shade provides information about when the stamp was made, and possibly even identify a particular printing.
1887 British Consular Service revenue stamp printed in green fugitive ink. Fugitive pigments are impermanent pigments that lighten, darken, or otherwise change in appearance or physicality over time when exposed to environmental conditions, such as light, temperature, humidity, or pollution.
Tagging of postage stamps means that the stamps are printed on luminescent paper or with luminescent ink to facilitate automated mail processing. Both fluorescence and phosphorescence are used. The same stamp may have been printed with and without these luminescent features. The two varieties are referred to as tagged and untagged, respectively.
Invert error: Part of the stamp is printed upside-down. Inverted overprint: The overprint on the stamp is printed upside-down. Color error: Stamp is printed in the wrong color(s). Paper error: Stamp is printed on the wrong type of paper which, e.g., may have a different watermark or color than intended.
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Foxing is an age-related process of deterioration that causes spots and browning on old paper documents such as books, postage stamps, old paper money and certificates. The name may be a variant form of the English West country dialect term foust and Scots foze , to become moldy. [ 1 ]
During the awards show, a Los Angeles Times reporter asked Zendaya if she's engaged after the actress motioned to the ring during their exchange. In response, Zendaya reportedly "smiled coyly and ...
Kurt the CyberGuy walks through steps he recommends immediately taking after getting new electronics — like phones or TVs — as gifts this holiday season.