We have bought and installed several from Antique automobile radios also known as Radios for old cars. We have been very happy with the fit, finish, quality and sound. I suspect they may be the source for year one's radio but am not sure. They are pricey but better than the other junk out there in our experiences. They sometimes have a 6 or so week back log but I have found dealers like classic or YO usually have them in stock. You can check them out at the link paosted below. Other than that I would say Big Money Lewis would be a good choice. he's been around here for quite some time and i haven't heard any complaints

AAR Link