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Bluish coated paper on pre decimal machins

 
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Dave
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Joined: 22 Sep 2016
Posts: 3

PostPosted: Sat Sep 24, 2016 3:09 pm    Post subject: Bluish coated paper on pre decimal machins Reply with quote

Hi all - just new and trying to compile a specialist collection of pre decimal stamps and cylinder blocks. I was looking at the Machin & Wilding stamps co.uk where there is an excellent compilation of all types and varieties.
BUT they mention BCP/PVA - bluish coated paper - I have not seen this mentioned on any other site or publication.
For the 2d stamp, I have cyls 1d & 1nd, under uv light there is one block of cyl 1d which is definitely more fluorescent than the others - BUT this is only supposed to be on ordinary coated paper - not the supposed brighter BCP.
Cyls 5 is only on OCP, whereas cyls 6 on BCP and OCP -
So I'm left grasping for ant straws of information that might help.
The 1d machin is also on OCP and BCP especially the booklet stamps - I cannot tell any difference in any of these booklet panes.
Am I trying to be to complicated, the BCP is the ONLY place I've seen it mentioned - should I just stick to believing that OCP is the only definition.
After some trying I've managed to distinguish between the directions of print and the phosphor screens - which I'm taking as a major victory, so I am left with the BCP and OCP differences ??? Any advice or help ?
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crazyh1
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Joined: 20 Nov 2010
Posts: 99
Location: Lincolnshire, UK

PostPosted: Sat Sep 24, 2016 10:01 pm    Post subject: Reply with quote

Hi Dave,

the Machin Collectors Club catalogue lists these as separate types, but I think that might be the only place that does. They are something a tad contentious in that I believe the difference is really due to a higher or lower level of brightener in the mix, certainly not an intentional 'feature'. As to whether to collect them, that is personal choice. For what its worth, I don't and I have a pretty advanced and extensive collection that goes into some pretty dark corners of Machins - I deemed this one a step too far. Others will undoubtedly disagree.....but it would be a dull world if we all agreed Very Happy

Scott
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Dave
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Joined: 22 Sep 2016
Posts: 3

PostPosted: Sun Sep 25, 2016 9:20 am    Post subject: Reply with quote

Many thanks Scott - I have not seen any other references to this BCP in any publication or website - and would tend to agree with you that it seems a bit extreme and very contentious to suggest a different type.
I'll sleep a bit easier now that's sorted out in my mind.
Regards
Dave
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tangles2010
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Joined: 26 Jul 2010
Posts: 105
Location: Canberra, Australia

PostPosted: Tue Oct 04, 2016 1:27 am    Post subject: BCP Reply with quote

There were quite a few studies of pre-decimal Machin papers some years ago. I can recall an article in 'Stamp Collecting' and Deegam goes into the matter in detail. BCP was only on some values and I like to collect these separately. I can try to look up further details if you wish.
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Dave
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Joined: 22 Sep 2016
Posts: 3

PostPosted: Tue Oct 04, 2016 8:43 am    Post subject: Reply with quote

Yes I would like to know more about how to identify these papers, if that is included in the articles you mention, or from your own experience.
Dave
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