1 tube 6201 Philips Miniwatt Hamburg =ECC801s 12AT7WA
Miniwatt print, production Valvo Hamburg 1961. For any: CV10662 ECC81 E81CC 6201 CV815 7728 QA2406 A2900 QB309 B739 E2157 CV455 B309 B152 12AT7 6060 6679 ECC81WA. This corresponds to the application in the device.
