[Treaties]:

$850 · Offered by William Reese Company

TREATY OF FRIENDSHIP AND ALLIANCE BETWEEN HIS BRITANNIC MAJESTY AND HIS ROYAL HIGHNESS THE PRINCE REGENT OF PORTUGAL; SIGNED AT RIO DE JANEIRO, THE 19th OF FEBRUARY ... The English edition of this important defensive alliance between Great Britain and the exiled Portugese crown in Brazil. The treaty, negotiated in Rio de Janeiro, consists of eleven articles mostly related to naval matters between the two countries, and is signed in print at the end by diplomats Percy Clinton Sydney Smythe Strangford and Rodrigo de Souza Coutinho. Rare, with fewer than ten copies in OCLC.

Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.