From Pipes, Artisans and Trademarks, by José Manuel Lopes'
Regal is a former North American brand of the Regal Pipe Co. There are also models from Preben Holm and Butz-Choquin with this name.
Tom Colwell also mentions it as being connected with Linkman Co./Linkman Pipes
Ad and an example, courtesy Doug Valitchka
- Example and details, courtesy Doug Valitchka