CH 1942 Z33d Recycling of old materials FDC with address

Switzerland 1942 Recycling of old materials (Durchhalten, Tenir, Resistere),
FDC Stamps of different denominations connected (Z33d), Horizontal pair: Italian - German,
illustrated registered letter (Tapeten Probst, Bern) with address,
cancelled "21.III.42 Bern 8 - PP", good condition,
Catalog SBK Z33d + 201, Michel W Zd. 5 + 297.