Related Clues:

• Marine animal or sign of authenticity
• Distinguishing characteristic - indicates standard of gold, silver etc.
• Seal, on a ring say
• Finger-ring with engraved design
• It indicates the standard of precious metals
• Assay-stamp
• 'Seal, on a ring say (6)'
• With this one may be stuck-up with the ocean to start with in the ocean
• A ring for a little bird, by the sound of it?
• Ring for the sound of Aswan
• It need water to stick it up
• That little seal sounds like the ugly duckling
• Stick it up in the sea - with a further fifty
• Little seal or little bird, by the sound of it
• Stick in the sea