Is there a historical timeline of the Rooney Brushes? Are there pictures of the various designs and offerings, both vintage and modern?
Brad Sears is probably the best person to contact for that. If you do get that info, please share it with the forum. He works with Lee Sabini, who is owner/brushmaker at Rooney and is the knotmaker and owner of Morris & Forndran. Brad is, as far as I know, the only point of contact for Mr. Sabini. https://www.bradsearsshaveworks.com/