This collectible pair from Portugal – Azores features the classic King Luís I definitive design, overprinted “AÇORES” for regional use in the Azorean islands. Issued in the late 19th to early 20th century, these stamps reflect Portugal’s colonial and postal administration practices. The contrasting denominations of 10 Reis (ochre) and 100 Reis (violet) make this an attractive combination for collectors of classic Europe and Atlantic island issues. Highly regarded within Azores postal history, these overprints remain a cornerstone for specialists and traditional collectors alike.