philatelia
Member 
Captain Jack - my best kiloware find ever!
Posts: 3,654
What I collect: Ireland, Japan, Scandy, USA, Venezuela, Vatican, Bermuda, Austria
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Post by philatelia on Oct 16, 2023 8:26:08 GMT
What a rainbow of colors to be found in this Greenland definitive issue: FYI Hubby had to help me get this pic - he held my trusty Ray-tech lamp.  |
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djcmh
Member
Posts: 794
What I collect: Worldwide
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Post by djcmh on Oct 16, 2023 9:17:24 GMT
Not sure how Facit or AFA parse the issue, but youay have at least 4 different issues there based on the UV reactions
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Post by Statesman Stamper on Oct 17, 2023 15:50:02 GMT
My Facit Norden 2022 gives the following for the 10 ore:
Color: Grey-green
84aa - Thin paper, white in UV light 84ab - Thick paper, yellowish in UV light 84ac - White paper, bluish in UV light
Color: Green
84b - From booklet, no mention of UV reaction
I don't have an AFA to check. For giggles I also checked my 2017 Scott Volume 3. It does at least acknowledge the two shades.
Dale
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philatelia
Member
Captain Jack - my best kiloware find ever!
Posts: 3,654
What I collect: Ireland, Japan, Scandy, USA, Venezuela, Vatican, Bermuda, Austria
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Post by philatelia on Oct 17, 2023 18:19:08 GMT
Thanks, Dale Statesman Stamper The bright green booklet varieties fluoresced bright yellow. The others are indistinguishable except under UV - color is a very uniform grey green. Booklet copies have much less crisp background lines, too. ‘’In this pic, the top booklet stamp glowed yellow, the bottom stamp glowed a more intense yellow/orange. You can also easily see the difference in the printing. Pic taken using natural north facing light. I think the faded yellow copies started out bright yellow orange like the one at the bottom of this picture, but the coating faded after soaking. All the faded yellow that I have are postally used.  |
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Catweazle
Member
Posts: 103
What I collect: Chatham Islands (NZ), Molokai (US), Lord Howe Island (AU), Greenland, GB, some Australian Pre-decimals for good measure et hoc genus omne.
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Post by Catweazle on Jan 28, 2024 7:12:04 GMT
News to me!
Is this the case with many of the other Greenland definitives issued in similar years?
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khj
Member
Posts: 1,524 
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Post by khj on Jan 28, 2024 8:15:00 GMT
The FACIT catalog has fairly detailed descriptions/listings for the different tagging/paper varieties for the Scandinavian countries, especially during the transition years. The year range (or definitive issue affected) will vary among the countries. So using FACIT, you at least know which issues to put under the UV lamp.
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Catweazle
Member
Posts: 103
What I collect: Chatham Islands (NZ), Molokai (US), Lord Howe Island (AU), Greenland, GB, some Australian Pre-decimals for good measure et hoc genus omne.
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Post by Catweazle on Jan 28, 2024 8:32:49 GMT
Side thought – is there a way to view these without a UV lamp?
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philatelia
Member
Captain Jack - my best kiloware find ever!
Posts: 3,654
What I collect: Ireland, Japan, Scandy, USA, Venezuela, Vatican, Bermuda, Austria
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Post by philatelia on Jan 28, 2024 15:19:49 GMT
Side thought – is there a way to view these without a UV lamp? Unlike some types of block or partial tagging where you can see where the tagging layer starts and stops, overall fluorescence is a different kettle of fish. It is often a property of the paper itself and not an added layer. Also applying the UV light is the only way to see the different colors. The light actually “creates” the fluorescent glow, so no light, no glow. The light charges and excites chemical bonds and when the light is removed the chemical bonds emit or radiate the glow. As an electrician I think of fluorescent materials as capacitors for light instead of electricity. So you have to apply energy as light to start the process. Does that make sense? |
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