Sweden Stamps 1936 Tercentenary of Swedish Post SG188/200 Used CV £43.3

Description: Sweden Stamps 1936 Tercentenary of Swedish Post SG188/200 Used CV £43.3 Computer Generated Grading CertificatesThe computer-generated grading certificates when present, are created by placing a 600 dpi scan of the stamp into the Rakum Stamp Analyzer program. The program automatically calculates, and displays on the certificate1. Number of perforations per 2 cm2. PSE centring grade for the frame relative to the perforations3. Size of the frame No account is taken in the grading of faults or appearance.Computer Generated Colour AnalysesThe computer-generated colour analyses when present, are created by placing a 600 dpi scan of the stamp into the Trigit program, and then selecting areas for colour analysis The program automatically calculates, and displays1. Saturation % of red, green, blue2. The number of pixels associated with each colour3. The hexadecimal code of the measured colour The most common way to analytically represent colour is via a 6-digit alpha-numeric HEX number, RGBA, and HSL Hex is a 6-digit, 24 bit, hexidecimal number that represents Red, Green, and Blue. There are 16 million possible colours.RGBA is similar to Hex in that it has 24 bits for RGB colour, bit there is an additional 8 bit value for transparency.HSL stands for Hue, Saturation, and Lightness. The values are based on a position from the centre of a colour wheel. The value for Hue is from 0 to 360, representing the degrees on a colour wheel. Saturation is the distance from the centre of the colour wheel. The L stands for Lightness, which represents the luminance.A large colour block with the observed Hex number can be created using online programs e.g. [www.hexcolortool.com/#ff0008], to allow easy visual comparison

Price: 10.8 GBP

Location: Falkirk

End Time: 2024-11-08T12:34:23.000Z

Shipping Cost: 4.67 GBP