Yes. While the front scan helps with the stamp ID and the city of use, an additional scan from the back side with a black background will show only the holes and will make the perfin ID much easier for us.
It looks like maybe "S C" over something, but it is hard to tell from the picture. A better picture is needed for ID.
In general, a perfin's letters stand for the organization that made it. Sometimes an organization used a letter or letters that don't seem to have to do with organizations name at all.
Some governments purposely made perfins, including Australia, Switzerland, Bavaria(part of Germany), and Canada.
Perfins were created by companies to protect against stealing. By punching holes in the stamps they bought, they were indicating the stamps were for company/government/organization use only, and made it harder for other people to steal them and use them for personal use.
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