Gibraltar 1956 Postage Due Stamps

=Description=
 * Issue Date: 1956-12-01
 * Withdrawn: 
 * Designed by: 
 * Engraving: 
 * Printed by: 
 * Print Process: 
 * Paper: Chalky paper
 * Width: mm
 * Height: mm
 * Perforation: 17½ x 18
 * Watermarks:Multiple Crown and Script C A
 * Format:

=Stamps=

=Data Serie=

=Notes=