Twist vs. Plain Twist

[Drew Hause]

Here's another. Unfortunately I failed to document the DOM or grade but thinks it was a Lifter. Same font as Dave's link.

[Drew Hause]

The plot thickens. 1892 PH with letter and rib marked "Twist"



Which is most certainly not the usual Parker "Plain Twist"

[mobirdhunter]

So, would the fact that the gun was a 14 gauge be part of the reason for different barrel material?