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1851-57 Imperfs - Buying Tips?

 
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Posted 07/19/2021   8:40 pm  Show Profile Bookmark this topic Add canyoneer to your friends list Get a Link to this Message
Hello All - I am interested in adding a couple of the higher denominations of this imperf series to my US collection. I saw a few at a recent show/bourse but am uncomfortable purchasing anything without a certificate. Are there any basic IDs that a person could use to make sure they are getting, say a #17 and not a #36 with removed perfs? I saw a post recently about the certification of #315 singles is usually based on a minimum heights/widths. Not sure if something similar might apply to the 1851-7 series.

The couple dealers I spoke with said they would grant an extension but if there's something obvious I could check on the spot, it would save everyone's time and effort. Thanks in advance.
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Posted 07/19/2021   8:47 pm  Show Profile Bookmark this reply Add rogdcam to your friends list  Get a Link to this Reply
My tip for a 17 would be to ensure adequate margins. This SCF topic gives a bit of illustrated info:

https://www.stampcommunity.org/topi...OPIC_ID=5425

Understanding how issues were manufactured to include spacing, perforations etc. is key.
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Posted 07/19/2021   9:24 pm  Show Profile Bookmark this reply Add dudley to your friends list  Get a Link to this Reply
Sc #17 and Sc #36 (as opposed to #36B) were both printed from the same plate, and so are identical except for the perforations. So the only way to know for sure is to have a #17 that has enough margin to show a portion of an adjacent stamp.
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Posted 07/19/2021   10:12 pm  Show Profile Bookmark this reply Add revcollector to your friends list  Get a Link to this Reply
"So the only way to know for sure is to have a #17 that has enough margin to show a portion of an adjacent stamp".

Even that wouldn't prove it unless the opposite margin is wide enough to make it certain; it could just be an off center example. But very few trimmed examples seem to be around, since the 36 has about an equal cat value.
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Posted 07/20/2021   5:36 pm  Show Profile Bookmark this reply Add canyoneer to your friends list  Get a Link to this Reply
I was looking at some #12's and #17's in the Stamp Smarter PSE Cert database and there are quite a few that don't show any portion of an adjoining stamp. There must be a minimum size that they use in order to make the call.
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Posted 07/20/2021   5:50 pm  Show Profile Bookmark this reply Add revcollector to your friends list  Get a Link to this Reply
The margins between the positions on those plates are so small, it is all but impossible to find four margin perforated examples.

http://pfsearch.org/pfsearch/pf_grd...lledfrom=lkp

It's really obvious on 17.

http://pfsearch.org/pfsearch/pf_grd...lledfrom=lkp
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