« Previous Switzerland Special Stamp View Full Size All Images Joint issue celebrating 700 years of the Swiss Confederation. Tags CropImage JointIssue SouvenirCard Switzerland UnitedStates Dates & Locations Feb. 22, 1991 Washington, DC, US Related Covers Cooperation in Space First Voyage of Columbus Italian block First Voyage of Columbus Saint Lawrence Seaway Canadian FDC Australia's Bicentennial Swissair Washington DC to Zurich
