Craig, something about this pipe is hinkey. First of all I would
NEVER buy a colletable English pipe from Italy, but that's just me. This pipe has been offered before...
https://www.ebay.it/itm/SASIENI-ONE-DOT-PATENT-MADE-IN-ENGLAND-1919-1924-22-pict-estate-pipa-pipe-/153192467053?oid=153148487277
What's up with that slightly bent stem? The patent is from
1925, so the seller's dating is wrong. A European One Dot...?
See,
https://worldwide.espacenet.com/publicationDetails/originalDocument?CC=GB&NR=242513A&KC=A&FT=D&ND=3&date=19251112&DB=worldwide.espacenet.com&locale=en_EP#
and also,
http://pipesmagazine.com/forums/topic/sasieni-shape-code
That slightly rounded over inner rim can be seen on Sasieni pot shapes, Moorgate and Smallgate.
Also a good reference
https://imgur.com/a/YvPhA