Thank you Mark. Definitely not "Plain Twist" or "Stub Twist", and I believe (but could be wrong) my original read is correct.
Here is the
Manufacture Liegeoise D'Armes A Feu Salesman's Samples from the collection of Ken Waite Jr. and Ken Waite III; your barrels are No. 2 or No. 5
Joseph Juleinond de Nessonvaux sample segments; on the far right
We've seen this pattern on a few No. 1 Smiths; this is David Williamson's. Note the "Laminated Steel" rib marking; which it certainly is not. Hunter Arms used "Laminated Steel" on Quality No. 1 guns 1892-1898.
First I've seen on a Parker, but I certainly have not seen them all. Very cool!
No telling who the Liege "rough forged tube" maker was in the absence of any marks. Most of the barrel operations turned out variants of Bernard patterns
https://docs.google.com/document/d/1...P3FP0fXb0/edit