Sickles, billhooks, plough irons, and the seasons written in iron.
Farming iron is abundant and long-lived: sickles (deeply curved, sometimes serrated), scythe blades (long, straight-backed), billhooks (heavy hooked choppers in fiercely regional patterns), spade irons (iron sheathing for wooden blades), plough shares and coulters, and hay forks.
Form changed slowly, so precise dating is hard — a medieval sickle and a Victorian one can rhyme. Manufacturing helps: hand-forged tools show laminated structure and smithing marks; 19th-century factory tools carry stamped maker names worth recording verbatim.
Rust hides detail — photograph profiles against plain backgrounds and note socket versus tang hafting. Be honest about the wide date range, and lean on regional pattern books for billhooks especially; the shape often names the county that made it.
Identifying clay tobacco pipes