| Brand | Philips |
| Type | 531A |
| Year | 1936 |
| Tubes | AK2 AF3 ABC1 AL2 AZ1 |
| If you have additional data or images please use the submit-form to send your data. |
(c) 2000 Mario Huizinga
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| Brand | Philips |
| Type | 531A |
| Year | 1936 |
| Tubes | AK2 AF3 ABC1 AL2 AZ1 |
| If you have additional data or images please use the submit-form to send your data. |