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Book wine stamp perf 12 Vs 12.5  
 

 
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Valued Member

United States
46 Posts
Posted 01/06/2017   5:32 pm  Show Profile Bookmark this topic Add therevenueman to your friends list  Get a Link to this Message
Hello SCF, the 2017 Scott specialized catalogue added two wine stamp perf verities this year RE107E and RE107F the perf 12-1/2 of RE107C and RE107D. My question is there any way to tell the difference between the two based on serial numbers or other information as I have a hard time seeing half of a perf per 20mm.
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Pillar Of The Community
United States
4171 Posts
Posted 01/06/2017   7:18 pm  Show Profile Check Petert4522's eBay Listings Bookmark this reply Add Petert4522 to your friends list  Get a Link to this Reply
Hi revenueman. I do not quite understand the question. The difference between 12 and 12.5 should be easily detectable with a perforation gauge?

Peter
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276 Posts
Posted 01/06/2017   7:19 pm  Show Profile Bookmark this reply Add revenuermd to your friends list  Get a Link to this Reply
The perf 12 was the work of the Rosback perforator that produced the well known Scott 536, the one cent offset postage stamp. One way of identifying the perf 12 varieties of the $50 and $100 book wine stamps would be to compare the perforations to an example of 536. Only the $50 and $100 stamps were produced after 1938 and that is when the Roebuck perforator was used. So these are the higher serial numbers. My best guess is that serial numbers higher than 18000 on the $50 denomination were all perf 12 . Similarly serial numbers over 40001 for the $100 were all perf 12 .

The perf 12 stamps are much more common than the Kiusalas perf 12-67 (actually closer to perf 11 ). I estimated that only 5000 of the $50 were produced perf 12-67 and during the period when I was actively exhibiting the wine stamps I recorded only 8 in collections (I recorded 21 of the perf 12 in collections).

Similarly I estimated that only 27,000 of the $100 were produced and at the time I recorded only 9 in collections (I recorded 78 of the perf 12 in collections).

I would guess that an updated census on the perf 12-67 stamps would not differ markedly from my figures. However, I would guess that the $100 perf 12 census today is significantly higher.
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Ron Lesher
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United States
276 Posts
Posted 01/06/2017   7:22 pm  Show Profile Bookmark this reply Add revenuermd to your friends list  Get a Link to this Reply
As you may guess from my previous post I was one of the people who urged the listing of the two perforation varieties. I first wrote about these perforation varieties in The American Philatelist in 1983!
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Ron Lesher
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Posted 01/07/2017   07:44 am  Show Profile Bookmark this reply Add jogil to your friends list  Get a Link to this Reply
There were two different Rosback perforators involved:

Stroke perforator for Kiusalas 12-67=11.75
http://www.rosbackcompany.com/images/Foot_Perf.jpg
https://www.google.ca/patents/US387543

Rotary perforator for Kiusalas 12.5-63=12.50
http://www.rosbackcompany.com/images/pony_perf.jpg
https://www.google.ca/patents/US1127092
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Edited by jogil - 01/07/2017 2:00 pm
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