In recent months there's been a resurgence of interest in classic frames from decades past: small antique-like metal frames; rimless and semi-rimless styles; simple rectangular shapes in tortoise colors; and yes, the P3 (semi-round) frames popularized by John Lennon.
I've found several companies specializing in these great "old-school" frames, including some of the original manufacturers. Now in stock:
Schnuchel
Exceptional, handcrafted frames to order. German workmanship and rich tortoise colors set these frames apart.
Europtic
Classic-shaped frames with rich tortoise colors.
Color in Optics
An old friend -- one of my best-selling companies in the 1970's and 1980's, known for popular shapes and wonderful colors.
Cutler and Gross
Very bold, very English, with heavy blonde and dark tortoise colors.
L'Unique (Zip+Homme)
Exquisite, high-quality frames in stunning colors. One of our best-selling lines.
Anglo American
A venerable British company that continues to make their original classic frames. We could always count on Anglo American for classics when other companies had stopped making them.
MicroShapes
A stylish frame for smaller faces. Also an excellent choice for very strong prescriptions.
Allyn Scura
California-based company with modern versions of classic frames. Very popular in movies -- we get many inquiries from customers looking for the frame worn by Johnny Depp in Secret Window.