17 selected
- Not filled in
- O (Franz Offner 1742-1750)
- Oak branch and oil lamp (unknown)
- Oak leaf (Nicolas Maillard 1546-1552)
- Oblique bar (Jean Baptiste de la Tour 1706-1723)
- OF (Johann Friedrich o Feral, Leipzig 1763-1765)
- OHK (Otto Heinrich Knorre 1751-1756)
- OHK (Otto Heinrich Knorre 1761-1805)
- Oil lamp (Laurent Bruno Lhoste L'AN 5-L'AN 12)
- OK (Ottfried Konig 1718-1725)
- OL (Olof Lidijn 1773-1819)
- Olijftakken (Pierre Latrilhe 1829-1835)
- OM (Manuel Ochoa & Manuel Miner)
- OM (Oeschger Mesdach & Co)
- Orb (Poul Gulden 1582-1585)
- Orb with cross (Isaac Estoille 1666-1667)
- OV (Manuel Ochoa & Jose Mariano Vela)
- Owl (Raymond Joly 1958-1974)