Beylicat of Tunis (Ottoman administration), 50 riyals ND (1846 / AH 1263).

P.A2.
Top Pop: the most beautiful graded copy! Without alphabet or number. Extremely rare! Only four examples in total are listed in the PMG population database to date! The most recent example to be auctioned, graded PMG 25, sold for 18,000 USD including fees at Heritage Auctions (USA) in September 2019.
PMG 35 Choice Very Fine (2462200-001).
Extremely rare and very fine copy with small tears in margins. TTB to TTB+.