- This First Day Ceremony Program has a prized ADDITIONAL pictorial cancellation: "Primer Dia de Emisión, 18 de febrero de 1990, LMM Foundation
Station, San Juan, P.R. 00936". (see photos 3 and 4).
- This
rare, additional cancellation makes this particular Ceremony Program unique and stand
out from regular #2173 First Day Programs that have only a single USPS cancellation.
- Part
of the Great Americans series issued by USPS, the #2173
Luis Muñoz Marín stamp was issued on Feb. 18, 1990, which would have been the
92nd birthday of Mr. Muñoz Marín, who was the
first elected governor of Puerto Rico (previous governors were appointed by the
President of the U.S.).
- With
Puerto Rico on the path of change from U.S. Territory to U.S. State, this
is a one-of-a-kind item not only for First Day Ceremony Program collectors,
but also for chroniclers of Puerto Rico's centuries-old Spanish-American
history.
- Shipping in protective envelope by First Class Mail to all U.S. addresses, including
territories.