1941 savage sniper questions

I had this 1941 #4T savage for a long time.It was never matched with a scope.It has the S51 mark on butt.Has original matching savage 1941 barrel.All matching original savage wood.What is curious is that it also has enfield marks.The stamp on the receiver and bolt is the same as on my 1931 trials sniper and the crown over 13 stamp on the wrist of the butt is the same as on my 1931 trials rifle NOT converted to a sniper.Are these marks typical of early savage snipers??
If it has both holland and holland and enfield marks, who done the conversion?

https://www.milsurps.com/images/impo...P1010622-1.jpg

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H&H did the conversion. Enfield inspectors marks are on all original H&H conversions regardless of where they originated from.

There's something you don't see every day...

That's certainly an acceptance stamp in the wood, but could the marks on the bolt handle & receiver ring possibly be poorly applied London Proof House marks? They are exactly where I'd expect them to be.
Yes, agreed it will be a H&H conversion.