https://coinsnotebook.com/wp-content/uploads/1651-Sixpence-Commonwealth-3219-Obverse-CNG.jpg 1651 Sixpence – Commonwealth - The Obverse shows a shield with the cross of St George. Mint mark of a Sun at top. Legend in plain English. Legend is "THE · COMMONWEALTH · OF · ENGLAND".
1651 Shilling Commonwealth Obverse 1651 Shilling – Commonwealth - A silver shilling minted at the Tower (London) mint. Article explains about Commonwealth coins. This coin has been cleaned and is starting to re-tone again.