Historical clue formulations

• Horseshoe-shaped pipe fasteners — 2025-02-16
• Some letter-shaped hardware — 2022-08-02
• Curved fasteners — 2014-12-28
• Horseshoe-shaped fasteners — 2006-08-02
• Latch pieces — 2001-12-27
• Horseshoe-shaped fasteners — 1999-11-06
• Heavy steel holders — 1998-04-28