Your JW/&S perfin is not listed in my old 1998 catalogue but this only lists identified British perfins.
At that date around about 22,900 perfin dies (pin patterns) were known but only about 8,200 had been identified with a particular user.
There are now 24,801 different dies known and roughly half of these have been identified with one or more users.
I can't work out the perfin on the orange stamp. It could be HT, TH, PH, RH etc. with some blind or broken pins.
Your "Nottingham Corporation" is a "commercial overprint" used by an organisation to mark stamps for its own revenue use on receipts and other documents. Most since the 1920s have been on 2d stamps as this was the standard stamp duty.
This tax was abolished just before decimalisation in 1971.
Perfins and Commercial Overprints had the same purpose: to prevent theft and resale or personal use of unused stamps by employees.
A commercial overprint also prevented the stamp being used for postage.
This overprint is from the Nottingham Corporation, the local government authority in the city of Nottingham.
Hello nigelc, The orange perfin above is known as a control perfin. It is the very first stamp that is used as an anchor as such to perforate all of the others on the stamp. They are a bugger to find. I have one from the USA and now this one I was able to pick up from someone in Croatia. It came in the day I posted it. I will be keeping my eye out for other control perfins and will pick them up any chance I get.
Thanks for the info mate. As always... a welcome addition of knowledge to the site.
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