As it turns out, there are two Jørgen Larsens making pipes!
Søren Eric Andersen writes, "the brand MR: ANDERSEN was introduced by Remo Sørensen, a well known pipe dealer in Copenhagen. The pipes were made by several pipemakers, although I personally only knew one of them, Jørgen Larsen, formerly with Larsen & Stigart. It is unlucky that there are TWO Jørgen Larsens in this small trade, but the name is rather common in Denmark. I was not happy with [them using] that brand [name] for obvious reasons, but Andersen is quite a common name too. With my best regards, Søren Eric Andersen."
José Manuel Lopes states in Pipes, Artisans and Trademarks that these pipes were also made by Jarl and Chieftan.
Nikolaj Nielsen, proprietor of The Danish Pipes Shop reports that Finn Andersen was the maker (or perhaps one of the makers) of Mr. Andersen pipes for Remo Sørensen. It is unclear if this Finn Andersen, is Finn Meyan Andersen, who was instrumental in setting up the machinery at the Briar Workshop, but that seems possible, if not likely.