Double-ended folding curved bistoury with tortoiseshell sheath
1846-1850
2 folding double-ended bistouries
1871-1910
Steel gum lancet folding into ivory sheath
1850-1875
Knives, steel, folding into ivory sheathes
1750-1830
Straight bistoury
1846-1850
Folding knives
1841-1890
Combined tenaculum and gum lancet
1836-1860
Bistoury, steel
1825-1856