| Brand | Friden |
|---|---|
| Model | SW 8 |
| Vintage | Yes |
Check the listing for details. Friden SW 8 Mechanical Calculator, Powers Up, Clear Key Stuck, As Found. Condition: Used. Listed at 337.50 USD. This machine is one of 3 that I had. Having seen this next to a working SW10, this appears to be a functional unit with a stuck clear key. When you plug it in it continuously clears. Please, see photos. The Friden SW 8 Mechanical Calculator is a vintage consumer electronics item that powers up. It has a clear key that is stuck, as found in its current condition. This calculator is a piece of vintage technology from the brand Friden.