The outside looks like a thimble but as the PAS record says “It is difficult to see how this might have been securely attached to a finger-sized sleeve to function as a thimble cap“. The suggested date is 1600-1700 and it is going through the Treasure process.
Heart shaped silver thimble
Photo: North Lincolnshire Museum CC By SA2.0
Object type: Thimble
Period: Post Medieval
Primary material: Silver
Date found: 15/11/2022
Location: West Lindsey, Lincolnshire