Tang locking screw on high grade guns

[B. Dudley]

That looks original to me. Generally the minor screws on the action will not be engraved the same as the major ones. And the surrounding engraving does look right.

[edgarspencer]

In addition to the ring engraved around the locking screw, the tang screw engraving around the concave 'pocket', for the lock screw, has no signs of a clipped edge.

[Bill Murphy]

Some lock screws line up with the larger screw. Some are installed at a 90 degree angle. Which would be considered correct by a classic gunmaker like Purdey or Boss?