| Brand | Moorhead |
|---|---|
| Time Period Manufactured | Pre-1930 |
| Country of Origin | United States |
Check the listing for details. 1920 Moorhead Radio Tube With Shaw Base, Amber Glass & GOOD Filament. Made in United States. Listed at 350.00 USD. Here's a beautiful tipped Moorehead tube that I believe dates to around 1920. The amber glass envelope reads, "Moorhead Laboratories -- San Francisco -- 200708".