Commonwealth 1660 Sixpence, mm Anchor, very rare

Commonwealth (1649-60), silver Sixpence, 1660, date double struck, English shield within laurel and palm branch, legends in English language, initial mark anchor, .THE. COMMONWEALTH. OF. ENGLAND., rev. English and Irish shields, value .VI. above, beaded circle and legend surrounding, date at top, legend surrounding, .GOD. WITH. VS., weight 3.04g (Bull 215 R3; ESC 1497; N.2727; S.3220). Toned, a little double struck with some associated weaknesses, very fine and very rare.