VH Grade barrel markings
 

I picked up a Parker 12 GA VH grade with 30” barrels. In studying the watertable and barrel flats it appears that the gun:

Made in 1901
Vulcan Steel barrels
No. 2 frame
4.4 barrel weight before striking

My questions:
What does the Kf mean?
What does the + on the barrel flats under each barrel mean?

https://i.imgur.com/71HZs1w.jpg

https://i.imgur.com/gTJGWot.jpg

Thanks in advance for your input.

There have been several opinions of what the Kf represents and you can find them by doing a search here on the forum.

There has been speculation that the + may indicate a slight overboring due to some minor roughness in the bore after the first boring. We often see the + on just one barrel but oftener there will be no + at all.





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Thank you Dean.
Appreciate it.