She's a pretty one, Jim.
if the label sez made in Chicago, it's at least 60-something years old. You lucked out, I'm thinking.
Half a dozen years ago I picked up a Chicago-built Regal tenor. One rusty string, wasted banjo-style tuners, a khaki cloth-over-pasteboard case [which still has an aura of attic] but I gave him $50CDN for it. Hang on the wall, if nothing else. Tenor strings, new guitar-style machines, and a good buffing at Jeremy "Hammtone" Hamm's shop = endless hours of great fun. Hope you find appropriate music to play upon your tiple. Excuse thread creep, eh Jim?
Nothing to contribute about tiples, but my Regal came from a shop which made decent, durable instruments.
keep pickin'
dennis