norsten
Member 
Posts: 174
What I collect: Definitives from Western Europe, Swedish postmarks
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Post by norsten on Oct 24, 2020 17:19:59 GMT
As I tried to bring some kind of order to my collection of Belgian stamps I stumbled upon a paper variant I have not encounter before, polyvalent paper. How can you tell the difference between ordinary and the polyvalent ones? Any help would be greatly appreciated.
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stainlessb
Member
qaStaHvIS yIn 'ej chep
Posts: 4,642
What I collect: currently focused on most of western Europe, much of which is spent on France, Belgium, Germany and Great Britain Queen Victoria
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Post by stainlessb on Oct 24, 2020 18:24:39 GMT
Found this
sounds like it applies to more modern issues,
Description: Polyvalent paper shines white to blue-white in UV light (variant on normal paper shines greenish) Issued in sheets of 60 or 120 stamps and in roles of 1000 stamps. Every fifth role stamp has a number backside.
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Post by snorri74 on Mar 19, 2022 13:21:09 GMT
Salve, anch'io ho un problema con la carta di alcuni francobolli belgi del 1968 con il tema della locomotiva. Sul COB distingue 3 tipi di carta: A) "papier terne"; B1) "papier blanc gomme mate"; B2) "papier blanc gomme brillant"; C) "papier polivalente (papier brillant)".
Vorrei sapere come si presentano sotto una lampada UV e se รจ possibile in qualche altro modo capire come distinguerli.
GRAZIE
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cjoprey
Member
Scanning stamps for my website...
Posts: 1,443
What I collect: Belgium (predominantly), British Commonwealth (older ones), WW (whatever comes my way...)
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Post by cjoprey on Mar 24, 2022 22:55:35 GMT
Hi snorri74 - the 4 paper types you mention are for TR378-TR398 in 1968 I believe. The four types can be dstinguished as follows: - "Papier Terne" - dull (slightly yellow) paper, with a yellow gum on the back - "Papier blanc gomme matte" - white paper, with a matt gum on the back (no shine) - "Papier blank gomme brilliant" - white paper, with a shiny gum on the back - "Papier Brilliante" - shiny white paper (the other three are not shiny, so you should be able to see this by holding the stamp sideways to see if the coating is shiny or dull |
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Post by snorri74 on Mar 29, 2022 9:37:29 GMT
Thanks cjoprey for the answer, my doubt was for the used stamps and without rubber and I noticed that under the UV lamp the "papier terne" are opaque, while the "brillant" ones are brilliant, while for the other 2 types I have no feedback and I was wondering how they turned out under a UV lamp  |
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cjoprey
Member
Scanning stamps for my website...
Posts: 1,443
What I collect: Belgium (predominantly), British Commonwealth (older ones), WW (whatever comes my way...)
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Post by cjoprey on Mar 29, 2022 9:53:12 GMT
If they are similar to the P2 paper types for normal stamps (which I suspect to be the case) then they will also shine white with a slight blue tint, but not as bright as the "brilliante" stamps. You will need to compare them to see the difference - I find using UV when looking at the back of the stamps makes the difference much more obvious.
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tobben63
Member
Stamp eat sleep repeat
Posts: 1,866 
What I collect: I collect to much, world wide!
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Post by tobben63 on May 28, 2022 6:02:40 GMT
I found this on a site that looks 'dead' (partly working) The reference is to Belgian Cob number I think. ( I have now added link to the reference stamps on Colnect) Belgian stamps paper typesSince 1966 paper types are indicated within the info of the stamps:
P1 DP Dull paper with shiny Arabic gum before 1955 ref nr. 967
P2 WP White paper with shiny Arabic gum after 1955 ref nr.1907
P3 F Phosforescent paper with shiny Arabic gum (1965) ref nr.1570
P4 P Polyvalent paper with shiny Arabic gum (1973) ref nr. 1856
P5 PF Polyvalent Phosforescent paper with PVA(2) green Gum GR (1976) ref nr. 2277
P5a PF Polyvalent Phosforescent (Epacar) paper with white Gum WG (1983) ref nr. 2111
P5b PF Polyvalent Phosforescent (Epacar) paper with yellow Gum GE (1984) ref nr. 2227
P6 P Polyvalent Fluorescent paper with PVA green Gum GR (1979) ref nr.1947
P6a P Polyvalent Fluorescent paper with PVA white Gum WG (1984) ref nr. 2402
P6b P Polyvalent Fluorescent paper with PVA yellow Gum GE (1986) ref nr. 2224
P7 Ty Typo paper Ty with blue Gum BG (1982) ref nr. PRE814
P7a Ty Typo paper Ty with grey Gum GG ( 1982) ref nr. 2261
P7b Ty Typo paper Ty with white Gum WG ( 1982) ref nr. 2397
P7c Ty Typo paper Ty with light grey Gum LGG ( 1982) ref nr. 2240
P8 FL Fluorescent paper green Gum GR (1994) ref nr. 2622
P8a FL Fluorescent paper yellow Gum GE ref nr. 2671
GPW F GPW Fluorescent
GPW P GPW Phosforscent
GPW GPW
LITHO Litho FluorescentThe source is this siteAnd some of you might wonder what PVA (gum) is, I did. I found the answer here Adhesives (Gums) on Stamps. |
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cjoprey
Member
Scanning stamps for my website...
Posts: 1,443
What I collect: Belgium (predominantly), British Commonwealth (older ones), WW (whatever comes my way...)
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Post by cjoprey on Jun 2, 2022 22:54:13 GMT
Thanks for the list Torbjorn! I've been working on my own variant of this list and happy to share it here for now, although I will eventually make this a PDF with images of stamps under UV etc.  |
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tobben63
Member
Stamp eat sleep repeat
Posts: 1,866
What I collect: I collect to much, world wide!
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Post by tobben63 on Jun 3, 2022 4:27:57 GMT
This is very helpful Chris ( cjoprey). |
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