Netherlands — Signed Silver Brooch with Sailing Ship, Dutch Sword Hallmark Circular silver brooch featuring a detailed sailing ship in relief, with billowing sails, rigging, flags and rows of gunports above stylised waves. A diagonally notched, rope-like border surrounds the composition. A small signature is visible within the ship design, with a separate oval monogram near the lower edge, tentatively read as MR or RM. Neither has been conclusively attributed to a maker or designer. The reverse shows the corresponding recessed ship design and bears a Dutch sword hallmark for silver. It is fitted with a hinged pin and an open hook catch. Probably first half of the 20th century; the precise date of manufacture remains undetermined. Diameter: 52.8 mm. Total weight: 22 g.