It is currently Tue Sep 17, 2019 9:24 am (UTC [ DST ])



Post new topic Reply to topic  [ 3 posts ] 
  Print view Previous topic | Next topic 
Author Message
 Post subject: Stock Exchange Forgeries 1872
PostPosted: Mon Nov 26, 2012 7:00 pm 
Offline
User avatar

Joined: Fri Nov 09, 2012 7:00 pm
Posts: 51
Location: Norfolk
I've seen several articles on these, but no-one has mentioned the perforations. They appear to be too even to have been done except by a commercial perforator - has anyone any thoughts, please ?

Tony


Top
 Profile  
 
 Post subject: Transfer from previous board: original post 22069
PostPosted: Tue Nov 27, 2012 7:00 pm 
Offline

Joined: Tue Nov 27, 2012 7:00 pm
Posts: 1
The quality of the perforations which I have seen (actual stamps and scans) on first sight appear to be of a quality of conntemporary issues. I have measured the perforation fingerprint of many of these, and the results show some characteristics more exaggerated than normal, such as pronounced undercutting of some of the intersections, large pitch variations and to a lesser extent the linear displacements. The perforation hole diameters are not inconsistent with some genuine issues. So far I have found very little perforation fingerprint consistency within individual stamps and from stamp to stamp. If you have a stock exchange forgery and you wish to send to me a 1200 dpi scan of it, I will measure its fingerprint and see if the results are consistent with the data I have on file. I hope this is of some help.
David


Top
 Profile  
 
 Post subject: Transfer from previous board: original post 22331
PostPosted: Fri Dec 07, 2012 7:00 pm 
Offline
User avatar

Joined: Fri Nov 09, 2012 7:00 pm
Posts: 51
Location: Norfolk
David,
Thanks for your response - no stamp, I'm afraid, just saw some in catalogues and my curiosity was aroused, as a friend collects forgeries, and he's mentioned that perfs are often an indication.

Cheers

Tony


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group