New .22 SHTLE MK IV* Rifle What to look for?

[fjruple]

Hi Folks--

I just purchased a pretty clean .22 STLE MK IV*. The one issue with the rifle is the lack of markings to identify its manufacturer or remanufacturer. Originally the rifle was a No 1, MKIII* manufactured by BSA in 1918 with a serial number of J77516. Most if not all of the major parts carry this serial number. At some point it was remanufactured into a .22 MKIV*. The only possible date is from the BNP proof marking. I am guessing from about 1955. There are no markings that I can see externally on the barrel and it does not look like its been rebored and than resleeved to .22. At the rear is a very light "A. P" on the left side where the bolt enters into the receiver. And on the right a capital R and S which appear to separate stampings.

What should I be looking at so I can photograph for the forum? Any help would be deeply appreciated.

Cheers

--fjruple



Markings on rear of receiver



Serial Number on Bolt Handle




Letters "HV" on Barrel near Rear Sight



Proof Marks on Receiver Ring



Serial Number of Rifle on Receiver Ring



No Proof Markings on top of barrel



Numbers "22" on empty magazine



Serial Number on Wooden Foreend



Serial Number on Muzzle Cap



Markings on Firing Pin Head



BSA Manufacturer and Date and Model Number

Information

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