Hi all. First time posting but I've been lurking around the forum for a while. I've been researching a friends No.4 MK1 rifle and I'm having a hard time recognizing a royal cypher mark and some adjacent marks close to it. I believe the rifle is a BSA Shirley due to the fact that it has a N3XXXX serial number and M47C matching marks on the barrel and stock. I'll try to attach an image of the cluster of markings that I have questions about. If someone more knowledgeable could identify them for me I'd appreciate it. The rifle will never be sold as it was passed down from my friends grandfather however I would like to get an idea of what it would be worth in today's milsurp market.

Many Thanks for your assistance.
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