CH 1942 B15-B16 Pro Patria subscription FDC with address

Switzerland 1942 B (Swiss National Fête and PRO PATRIA - issues)
landscape paintings, SBK B15-B16, Michel 408-409,
2 white FDC with address (PTT-covers, sog. Gaudard-letter) with First Day of Place cancellation "15.VI.42 Geneve - Depot" und "15.VI.42 Forch - Zürich", luxury quality.