CH 1945 FDC out of bloc Basle Dove with address

CH 1945 FDC out of bloc "Basle Dove", white envelope with address, offical FDC of post (registered Mail), best quality (SBK W22, Michel 446), with additional franking 2x -.15 Rhonegletscher (SBK 204y, Michel 300y), cancelled with special cancellation "14.IV.45 SCHWEIZ. AUTOMOBIL-POSTBUREAU" and additional postmark "MUSTERMESSE BASEL 14.-24.IV.1945", very decorative!