drblade
Member 
Posts: 726
What I collect: GB Unmounted mint & Machin definitives Q.E.II Used commemoratives
|
Post by drblade on Jan 30, 2022 9:32:05 GMT
I don't specifically collect Machin cylinder blocks (maybe I should). I kept this one (from an auction lot). The last time I checked S.G. had it catalogued @ £125. (cylinder 10 no dot phosphor 7 displaced down).  |
|
vikingeck
Member
Posts: 3,261
What I collect: Samoa, Tobacco theme, Mail in Wartime, anything odd and unusual!
|
Post by vikingeck on Jan 30, 2022 10:28:20 GMT
I gave up in Machins as much too complicated for me. However there is one member of our Stamp club who is very much an aficionado of these cylinder blocks, with and without dot, misplaced or missing phosphor, missing pins, replaced damaged pins,extra pinholes etc .
For full study you need UV light source.
You can see the phosphor bands in your block most clearly in the lower margin
|
|
angore
Member
Posts: 5,335 
What I collect: WW, focus on British Empire
|
Post by angore on Jan 30, 2022 11:24:51 GMT
If I ran across a generic one, I would keep it These can help identify specific issues.
|
|
drblade
Member
Posts: 726
What I collect: GB Unmounted mint & Machin definitives Q.E.II Used commemoratives
|
Post by drblade on Jan 30, 2022 12:37:07 GMT
I gave up in Machins as much too complicated for me. However there is one member of our Stamp club who is very much an aficionado of these cylinder blocks, with and without dot, misplaced or missing phosphor, missing pins, replaced damaged pins,extra pinholes etc . For full study you need UV light source. You can see the phosphor bands in your block most clearly in the lower margin Thanks vikingeck, Iv'e got most of the identifying equipment including duel u.v. lamp, although my digital microscope is broken & needs replacing which is a real disadvantage/pain. The Machins are complicated, floating values, varnishes, split bands etc. I don't bother with missing pins although I've got a couple of 17 pin varieties which are not in my main Deegam collection. At the moment at level Deegam 2/3, I have 179 profiles just for the 3p ultramarine alone (singles)  |
|
|
|
Post by mudgie on Feb 13, 2022 15:41:19 GMT
I don't specifically collect Machin cylinder blocks (maybe I should). I kept this one (from an auction lot). The last time I checked S.G. had it catalogued @ £125. (cylinder 10 no dot phosphor 7 displaced down). You've reminded me that I've got about fifty of them that I bought from Post Offices about forty years ago. I've no idea if they're worth more than face value, and they won't be valid for postage a year from now. |
|
stainlessb
Member
qaStaHvIS yIn 'ej chep
Posts: 4,638
What I collect: currently focused on most of western Europe, much of which is spent on France, Belgium, Germany and Great Britain Queen Victoria
Member is Online
|
Post by stainlessb on Feb 13, 2022 16:12:15 GMT
I don't collect these myself, but can you explain what "7 displaced down" is in reference to?
just curious
|
|
brightonpete
Departed
Rest in Peace
On a hike at Goodrich-Loomis
Posts: 5,110
|
Post by brightonpete on Feb 13, 2022 16:19:26 GMT
I don't collect these myself, but can you explain what "7 displaced down" is in reference to? just curious |
|
drblade
Member
Posts: 726
What I collect: GB Unmounted mint & Machin definitives Q.E.II Used commemoratives
|
Post by drblade on Feb 13, 2022 17:21:11 GMT
I don't collect these myself, but can you explain what "7 displaced down" is in reference to? just curious Hi stainlessb, The 7 displaced down refers to the phosphor cylinder number which should be alongside the "main"/ink cylinder number in the margin. It cannot be seen on the scan only with a u.v. lamp. These numbers can get misplaced up or down (and into other positions) when the ink & phosphor cylinders are not synchronised together when printing takes place. The large black numbers in the margin are not cylinder numbers but sheet or warrant numbers. Lots of early issues were unsynchronized and also many numbers were guillotined off (early & later). Many cylinder blocks can have high cat values due to these displacements and also the perforation types of the blocks. Blocks can be priced in blocks of 6,8, or 10. differently. With reference to the sheet/warrant numbers these can also be used to identify a printer of the sheet, due to the fact that printings were different, fonts, ink jet etc. |
|
drblade
Member
Posts: 726
What I collect: GB Unmounted mint & Machin definitives Q.E.II Used commemoratives
|
Post by drblade on Feb 13, 2022 17:37:56 GMT
I don't specifically collect Machin cylinder blocks (maybe I should). I kept this one (from an auction lot). The last time I checked S.G. had it catalogued @ £125. (cylinder 10 no dot phosphor 7 displaced down). You've reminded me that I've got about fifty of them that I bought from Post Offices about forty years ago. I've no idea if they're worth more than face value, and they won't be valid for postage a year from now. My advice would be not to split them up until they have been fully checked. They could have some good catalogue values. I am actually checking some old ones at this very moment. Complicated at first but gets easier. Check the full length of the margin if you can't see a phosphor number (using a u.v. lamp) by the ink cylinder number. I'm using the Q.E.II DECIMAL DEFINITIVES ISSUES catalogue vol 4 part 1 for info. |
|
vikingeck
Member
Posts: 3,261
What I collect: Samoa, Tobacco theme, Mail in Wartime, anything odd and unusual!
|
Post by vikingeck on Feb 13, 2022 18:10:12 GMT
I don't collect these myself, but can you explain what "7 displaced down" is in reference to? just curious Pete, as has been pointed out to Stan above. The displaced 7 has nothing to do with the printed sheet number you can see . It refers to the invisible phosphor cylinder number, similar to the blue 10 …….Invisible here, and only revealed under UV light l
the position can wander up or down the selvedge. |
|
