Watch List notes:

MONTENEGRO: 20 Perpera (1910) in gold (0,900) commemorating the 50th Year of Reign. Laureate head of Nicholas I facing right on obverse. Crowned mantled arms within sprigs above date and value on reverse. Inside slab by NGC "AU DETAILS / CLEANED / GOLDEN JUBILEE". Cert number: 6633273-006. (KM 11).