The Lane logo was only stamped on the shanks of pipes shipped to the U.S. I am sure that there are many Charatan pipes in the U.S. which were bought in London stores or the Charatan shop in Jermyn Street in the 1960-1970s as the cost of them in England was about half the price. These would not have been stamped with the L logo.
The first 'freehand' was made by Barry Jones in 1959 and I think the name 'Freehand Relief' came about in the early to mid 1960s (before this Relief was called Sandblast at Charatans).