'Abd al-'Aziz bin Mahmud II with Muhammad al-Sadiq Bey, copper double Proof Set, struck at the Heaton Mint, Birmingham, dated 1281 AH/1864 AD, consisting of two of each of the following denominations, 2-, 1-, -, and -Kharub (8 coins) (KM.PS.-), all brilliant, as struck, with full lustre, rare (8)