An 18ct gold signet ring

An 18ct gold signet ring, monogrammed, with interior inscription, and a smaller signet ring, stamped '9CT', also monogrammed, ring sizes O and M½ respectively (2)
Condition report:
First ring: heavy wear, scuffs, scratches and nicks/chips to mount. Engraved monogram is heavily rubbed. Porosity and solder joins visible to base of shoulders. The shank has been re-sized with a later added section. Light wear to hallmarks. Additional mark, possibly 'JK'. Interior of mount inscribed '1947'. Approximate gross weight 6.2gm. Second ring: scuffs, scratches and nicks/chips to mount. Solder joins/repairs with associated porosity to shoulders, traces of a possible hallmark to base of one shoulder (heavily rubbed), shank may be later replaced. Some wear to engraved monogram. Approximate gross weight 2.3gm.