It appears from the pictures I've saved that the earlier Twist barrel PH guns were marked with the T with crescents above and below while guns above 131xxx have just the T. There are some huge gaps in my data points.

Thank you Paul, but is that not the bottom gun's barrel?

Though marked "Stub Twist" it is Parker's “Fine English Twist”.

In the 1882 Parker Bros. catalog the Qualities R, S, T & U were listed with TWIST barrels, and the Qualities N, O, P & Q were listed with FINE ENGLISH TWIST barrels. I've never seen a rib marking other than TWIST or STUB TWIST.

By the circa 1900 "blue ink" catalog the Qualities N, O, P & Q are gone and only the R, S, T & U with TWIST barrels remain. In the Hammerless guns the Qualities PH & NH are listed with FINE ENGLISH TWIST barrels.

By the "Pine Cone" and "Flying Brant" catalogs both the hammer and hammerless guns are listed with ENGLISH TWIST barrels, no more FINE.

A bit of a disconnect between what the folks in the office were writing in the catalogs and the folks in the factory were marking on the ribs.

Thanks Dave.
Unfortunately, in that there was no American, European and British Union for the Standardization of Nomenclature of Damascus and Twist Barrels makers could name their barrels whatever they wished, and did, often creatively ;)
Pretty much no chance that Remington's "London", Lefever's and Baker's "Best London Damascus Twist" or Parker's "Fine English Twist" tubes were sourced in England.

https://photos.smugmug.com/Damascus/...rlacher-XL.jpg

"London" is Damascus Twist
"Birmingham", "Ruban" and "Band" are...uh...some other kinds of twist :)

https://docs.google.com/document/d/1...sIjmr8uy8/edit

And according to Greener VERY little (true) Stub Twist was produced in England after the 1860s as horseshoe stubs became increasingly difficult to obtain

Thanks Dave - That's the information that's been missing. I don't have any of those catalogs.




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So Drew, where would they have been sourced... Belgium? They weren't sourced here... or were they?





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Parker could have made it easier for us 120 years later ;)

Fall 1898 Sears catalog the PH has "Fine twist"

https://photos.smugmug.com/Damascus/...20Parker-M.png

Catalog No. 112 1902 the PH now has "fine English twist"

https://photos.smugmug.com/Damascus/...%20large-M.png

re: sources for the "rough forged tubes" used by every U.S. double gun maker

https://docs.google.com/document/d/1...Ve9ur3mCo/edit

https://docs.google.com/document/pub...eFell8GsAWd-KI

Parker
https://docs.google.com/document/d/1...YvzD18i3c/edit

This doesn't help either ;)
Clearly Damascus Twist and labeled "Twist"

https://photos.smugmug.com/Damascus/...%20Twist-L.jpg

I place very little credence in the text in third party catalogs!! Company literature is confusing enough!