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 Replies: 7 / Views: 1,836 |
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Valued Member
139 Posts |
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All Flat Plate ink on reverse All SL WMK 411 width 21.5 412, 413 height 24.5    |
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Pillar Of The Community
United States
1942 Posts |
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Maybe it's not necessary to say this, maybe it is; I can't tell. But there could be some confusion here.
I've noticed that in your descriptions of the subjects for study you include lines like, "Rotary, no ink on reverse" or here, "All Flat Plate ink on reverse." I hope you and everyone understands that although the presence of setoff ink in any degree is pretty good evidence for flat plate printing, the absence of ink is not specific for rotary printing. Not every sheet of flat plate stamps had setoffs all over the sheet.
I would agree that when you don't see a setoff it's time to get out your templates. |
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Valued Member
139 Posts |
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NO confusion on my part since several factors produce the setoff on any given stamp.
Just a pretty reliable indicator.
Good for others to know. |
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Pillar Of The Community
3859 Posts |
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For U.S. coils, especially for distinguishing flat plate from rotary press, a Kiusalas gauge is a must since flat plate coils were perforated by a different kind of perforator than rotary press coils.
Kiusalas 10-79 (above 9.90 perforations per 2 cm) for flat plate and Kiusalas 10-80 (below 9.90 perforations per 2 cm) for rotary press coils. All perforation 12 and perforation 8.5 coils are flat plate.
Only perforation 10 coils are both flat plate and rotary press. There are no U.S. perforation 11 coils. |
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| Edited by jogil - 05/21/2015 3:15 pm |
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Rest in Peace
7742 Posts |
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So is this considered flat plate..?? Robert  |
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| Edited by wert - 05/21/2015 4:39 pm |
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Pillar Of The Community
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Pillar Of The Community
United States
1348 Posts |
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On the 3 coils, on each stamp there is at least one of the non-perfed edges that is rough, not a straight line, and could be showing some evidence of perfs that have been trimmed.
The flat plate coils are really, really tough and there are more fakes out there than genuine copies. Again, I'm more of an 1861 3c guy, but my guess is that all 3 are not genuine....
Hope this helps and that I'm wrong....Ray |
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Valued Member
139 Posts |
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Thank you Ray-Mac
I have had various "opinions" on these & not enough value to send in for cert.
Anyway - the reason there are so many collections on auctions - in the final analysis - just amusing bits of paper that no one takes with them. |
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Replies: 7 / Views: 1,836 |
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Posted 05/21/2015 1:19 pm
