ExcelMark Scanned Self Inking Rubber Stamp - Red Ink (42A1539WEB-R)

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Note: Non-barcoded Christmas themed and commemorative stamps will still be valid for postage past the deadline and cannot be swapped. What will happen if I try to use an old stamp past the deadline? If you can afford the extra expense its definitely also worth colour calibrating your monitor, this requires a colourometer such as a Spyder. These aren't particularly expensive, but are calibrated hardware equipment and so many times more expensive than a printed IT8 target (which you need whatever for this). Ken I have no problem with this idea, your stamp (certified) gives you a base colour (#ec2a65) scanned on your scanner 1, any other stamp scanned on that scanner you will be able to work with. Shining light through paper (e.g. using light from above, a lamp, or a torch) is a useful way to view features such as watermarks, and also any damage to paper. Document scanners

Barcoded stamps featuring both King Charles and Queen Elizabeth are both currently in circulation and will both will remain valid after 31 July. There is currently no date when barcoded stamps featuring the Queen will become invalid. Can I donate my old stamps? As said before in thread, the only way to standardise would be through sending actual stamps to others and that will never happen. I suppose a card of all the many GV Head shades is unavailable, as reference, for distribution? Once you have your target you scan it with all scanner colour correction disabled, save it as something lossless ( so not JPEG) and this gives you an image with the raw information from your scanner which can be compared against the published "true readings" for your target. Free software (I used something called "LProf open source ICC profiler") is then used to calculate the required colour adjustments which when applied to your scan would give the same colour figures as the reference figures. But price on request and the style of description suggests this is not going to be appropriate cost wise. In theory I assume you just replace the LEDs in a flatbed scanner with UV wavelength equivalents. Am sure that must be doable - ha ha ha - this from someone who has never managed to successfully get an LiDE scanner working again after popping the glass in my attempts to fix them!IF the stamp is a "pristine virginal mint stamp" and the printings are "shades which are clearly distinguishable by eye" then you should then be able to make an informed decisions using your knowledge, experience and the scans to assign it to a shade. These are useful tools for identifying whether documents are made from secure paper or UV safeguards are genuine. Transmitted light Thought it was worth putting together some information on colour calibration of scanners as the topic repeatedly comes up (directly or indirectly) on Stampboards and some good information is buried in threads. This isn't something I'm an expert on by any means - most of the info is based on what I've read on threads here. No, I'm not, you've definitely totally missed the point of this entire post. It was about colour calibrating your scanner. Going beyond that I've made reference to then using colour calibrated scans of multiple stamps to make visual judgements. Similar (although not the same) visual judgements you make by eye with multiple stamps infront of you in real life. Pink is a wide group of shades. Beech says, "They vary in daylight appearance from orange pink to lilac pink, with intermediate shades of rose pink, pink and lilac pink. There are dull, bright, deep and pale shades.........". I hope your system can cope with that.

While this is true it makes me think I have not explained the rationale behind this at all well If you have a certified stamp in-front of you and stamp of interest in-front of you then surely you would make a real-life comparison using a good natural north light? Taking a scan may help as well, but yes - colour calibration of your scanner isn't needed if the stamps are always going to be physically sitting together on your desk!! I'm looking to make colour calibrated scans work as well as possible for instances where real-life comparison is NOT possible. computer, 1 scanner, 1 stamp, 1 colour software, as long as they stay the same then all will be good on your computer. But if that scanner dies and then you will have to do a rescan of the first item the (certified) one, and you base any future stamp on that.The beginning posts on this thread are an overview of how to colour calibrate your scanner to the ANSI IT8 colour standard. From Wikipedia https://en.wikipedia.org/wiki/IT8 "Calibrating all devices involved in the process chain (original, scanner/digital camera, monitor/printer) is required for an authentic color reproduction, because their actual color spaces differ device-specifically from the reference color spaces. An IT8 calibration is done with what are called IT8 targets, which are defined by the IT8 standards. ... After scanning such a target, an ICC profile gets calculated on the basis of reference values. This profile is used for all subsequent scans and assures color fidelity." In fact the scanning of the GV heads and adjustment is useful however matted the stamp as it is the coloured elements that ´light up`.