Stamp Perfins: it is not just 'OS' out there! Show us yours. - Postage Stamp Chat Board & Stamp Forum
Perfin on Great Britain Used Stamp A22P16F8727 | eBay
Perfin Great Britain Used Stamp A25P44F19815 | eBay
Chris Green Stamps - Did you know? Perfins were introduced in Britain in 1868 and in the United States in 1908. To put a stop to the pilfering of postage, companies began
Perfin on Great Britain Used Stamp A22P16F8720 | eBay
Perfin on Great Britain GB Stamp Used A21P3F4306 | Great Britain, Stamp / HipStamp
Ron Leith Auctions Sale - 50 Page 135
Perfin - Wikipedia
Stamp perfins-what exactly are they? - The Stamp Echo
Perfin - Wikipedia
Elusive Great Britain Official perfins, 'The Spirit of the Nation' cinderella, faraway islands and their stamps: Inside Linn's Stamp News
1993 - The Perfins Club
GB : Official Perfins Identified Here. - Page 14 - Stamp Community Forum
Great Britain stamp, Scott#129, used, hinged, perfin, #gb-129 | Great Britain, General Issue Stamp / HipStamp
THE PERFINS CLUB LIBRARY
GB : Official Perfins Identified Here. - Page 4 - Stamp Community Forum
Great Britain : PERFINS | The Stamp Forum (TSF)
Great Britain : PERFINS | The Stamp Forum (TSF)
UNITED KINGDOM - CIRCA 1952: Postage Stamp Printed In The UK (perfin "OP"), Shows Queen Elizabeth II, Circa 1952 Stock Photo, Picture And Royalty Free Image. Image 33602110.
Online Catalogues GB
Perfin - Wikipedia
Stamp Perfins: it is not just 'OS' out there! Show us yours. - Postage Stamp Chat Board & Stamp Forum
great britain perfins Stamp Auctions
The Perfin Society - FAQ
Perfin on Great Britain Stamp QV Used A21P15F5269 | eBay
Collecting Perfins - YouTube
Perfins: maximum challenge, minimal cost
