Interesting pipe the Specially Selected, but it's not from 1923, as it has the
1925 patent 242513/25. More details on the Patent,
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#
Furthermore, the bill of sale appears to be from 1973, the prices are in "new money" (1971) note,
"In the United Kingdom, the value-added tax was introduced in 1973. On 1 January 1973 the UK joined the European Economic Community and as a consequence Purchase Tax was replaced by Value Added Tax on 1 April 1973. The Conservative Chancellor Lord Barber set a single VAT rate (10%) on most goods and services."
I'd say a Pre-War One Dot for the European market.