2019 Portugal Museus Centenários Museu Militar musée militaire museum Military Militärmuseum Militair Военный музей

https://www.delcampe.net/en_GB/collectables/stamps/militaria/2019-portugal-museus-centenarios-museu-militar-musee-militaire-museum-military-militaermuseum-militair-779193020.html

Contem banda de Fluorescência no verso.

FDC circulado de Lisboa para Estoi 

Country / Post	Portugal
Date of Issue	5 April 2019
Primary theme	Fine Arts (Museums and Art Galleries)
Subject	Centenary Museums of Portugal - Military Museum in Lisbon (1851)
Width	40.0 mm
Height	30.6 mm
Denomination	N 20g
Number in set	13
Layout/Format	sheet of 52 of 13 designs
Perforations	12.25 by 12
Stamp issuing authority	CTT Correios de Portugal SA
Printer	bpost