411 REFERENCE · Wikibooks
World Stamp Catalogue/Philippines/1919
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
STAMPS OF 1919
SPECIAL DELIVERY
(these stamps were issued with different color and perforation variations)
20c - Special Delivery Messenger (ultramarine)
20c - Special Delivery Messenger (pale blue)
20c - Special Delivery Messenger (dull violet)