Vintage picture postcard featuring a scenic view of Sonnenburg in the Swiss Alps, showing a castle on a rocky hillside above a river valley.
- Postcard era: Divided Back
- City: Sonnenburg
- Country: Switzerland
- Postal status: Unposted
Condition: Corner and edge wear. Light toning and small spot marks visible on the back.
- Postal Status:
- Unposted
- Era:
- Divided Back
- Size:
- Standard
