Ryan
Moderator 
Calgary, Alberta, Canada
Posts: 2,749 
What I collect: If I have a catalogue for it, I collect it. And I have many catalogues ....
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Post by Ryan on Dec 31, 2020 7:27:37 GMT
Here's something I came across the other night while sorting through a pile of stuff & nonsense. I searched through my catalogues (Scott, SG specialized Southern Africa, Michel and South African Stamp Colour Catalogue) and didn't see anything listed or noted, so I would have to assume it's just a colour changeling and not an actual production error. But it's a striking changeling in that case, I've never seen it before on this common definitive and it's certainly a broad change in colour from the normal green. Perhaps Mick or cjd or clivel (or one of our other collectors more knowledgeable than me about RSA stamps) can let me know if they have info about anything like this.   Ryan |
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vikingeck
Member 
Posts: 3,546
What I collect: Samoa, Tobacco theme, Mail in Wartime, anything odd and unusual!
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Post by vikingeck on Dec 31, 2020 10:18:30 GMT
In the past year I have taken up attending Zoom Art classes.
Our teacher is making us colour aware by restricting our palette to three colours + burnt umber and white (Red, yellow and blue , as in your household colour printer.)
It is striking indeed , but if the blue colour is sun faded , this would be what remains
Green. = yellow + blue
Dark brown = red brown+blue
Lilac = red + blue
Fade out the blue and what remains?
This is a very common stamp and would be interesting to experiment by leaving on a window sill for a week or two in strong sunlight. Might be easier to arrange in summer 😃
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Ryan
Moderator
Calgary, Alberta, Canada
Posts: 2,749
What I collect: If I have a catalogue for it, I collect it. And I have many catalogues ....
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Post by Ryan on Dec 31, 2020 12:56:55 GMT
It is striking indeed , but if the blue colour is sun faded .... This is a very common stamp and would be interesting to experiment by leaving on a window sill for a week or two in strong sunlight. The problem in this specific instance is that blue is the most difficult to fade - red fades first, blue fades last, so if it's a changeling then it won't be due to sunlight (any number of chemical processes would still be possible, of course). Sort-of-science talk here (eventually) ... The Canadian low-value flower definitives recently posted in this thread are noted for being printed with a relatively unstable ink, and they change rapidly in sunlight. You can leave them on a window sill for a few sunny days and some of them will change quite a bit. Ryan |
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clivel
Member
Posts: 385
What I collect: Basutoland, Bechuanaland, Rhodesias, South Africa, Swaziland, Israel to 1980, Ireland predecimal, Palestine Mandate
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Post by clivel on Dec 31, 2020 18:30:57 GMT
Ryan, Ignoring paper types and watermarks etc, there were three basic type of this stamp, both of yours are type III issued in 1967 - the N of VAN is directly over the gap between the K and A of AFRIKA. In the two earlier types it was over the I of AFRIKA.
I am not aware of changelings in this issue, but it could be possible, looking at your second stamp though, It does look as if the blue has been bleached out.
With the dye bleed at the bottom left, and also around Groot Constantia, it could possibly have been bleached by a liquid, perhaps something has spilt on it, or someone tried to clean it in something like a hydrogen peroxide bath but accidentally overdid the concentration or amount of time.
Clive
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