Information on Remington pattern welded tube makers here
https://docs.google.com/document/d/1DaS94GLQ9b3w9XRU4cBX7M0LUIB_mTDFpvSZxCmUQME/edit

I can't definitively read the faded pattern, but B grades usually had "Three stripe Damascus" (Oxford 4 S.J. or Chain J)



'S.J.' may have been Simonis-Janssen
'J' maybe Janssen
'HP' is often found on Oxford 4 barrels, and is likely Henri Pieper