| Auction House | Location | Results |
|---|---|---|
| O'reilly | Dublin | 0 |
| O'gallerie | Portland | 0 |
| Northgate Gallery | Hixson | 0 |
| Northeast | Portsmouth | 0 |
| Nigel Ward & Morris | Pontrilas | 0 |
| New Orleans Auction | New Orleans | 0 |
| Neumeister | Munich | 0 |
| Netherhampton Saler… | Salisbury | 0 |
| Nesbit & Co | Southsea | 0 |
| Neret-minet | Paris | 0 |
| Neales | Nottingham | 0 |
| Neal, Sons & Fletch… | Woodbridge | 0 |
| Neal Auction Company | New Orleans | 0 |
| Nautilus | Kraków | 0 |
| Nagyhazi Galeria | Budapest | 0 |
| Nadeau | Windsor | 0 |
| Mullucks Wells | Great Dunmow | 0 |
| Mullock's Specialis… | Church-stretton | 0 |
| Mullen's Laurel Park | Dublin | 0 |
| Mount Auldyn | Ramsey | 0 |
| Morphets | Harrogate | 0 |
| Morgan O'driscoll | Cork | 0 |
| Morel De Westgaver | Brussels | 0 |
| Morand | Paris | 0 |
| Moran | Los Angeles | 0 |