It's certainly worth getting them restored and selling them on . If you sold 2 pairs at once Scott you'd flood the market! My pros are bass monsters through the amp ( sr252) and energiser (sr007) that I have. Such is their scarcity it'll be unlikely I'll get the chance to compare the 2 side by side. Shipsupt has a pair of 404 modded and that will be an intcomparison if we manage to meet the two together. Scott , yes , thank you for your thread starter previously I enjoyed reading about who owned whay and what they were doing with them. I think they're so unique in their appearance and sound that a new thread was needed. I also felt so lucky to have acquired a pair that it seemed only right to keep their status current rather than consign to an object of curiosity in a museum.