The letters, 'CS' are the company mark. This must be on every hallmarked Conway Stewart piece.

Next are Scales which are known as the common control mark.

Next is a Finesse mark with a number referring to the purity of the metal. This must also be on every piece.

Next is the Assay Office mark. The Anchor is for Birmingham. The Assay Office mark must be on every piece.

Next is the Crown which means this is Gold. The Lion is the mark for Sterling Silver.

Last is a Letter which denotes a year.