CH 1953 314-315+276 Alp Post FDC french with address (combo-letter)

Switzerland 1953 special stamps Alp Post
Set Automobil-Post stamps on white cover with address (subscription letter),
with french Automobilpost first day cancellation "8.X.53 BUREAU DE POSTE AUTOMOBILE SUISSE - 1" 
and red addon cancellation "Bureaux de poste automobiles - nouveaux timbres-poste - Jour d'émission 8.X.1953 - GENEVE",
registered combo mail, luxury conservation,
Catalog SBK 314-315+276, Michel 586-587+311I