| Auction | Date | Lot number | Grade | Weight | Starting Price | Final Price | Comment |
|---|---|---|---|---|---|---|---|
| NAC 31 | 26/10/2005 | 6 | qSPL | 8.07 | 32,000 CHF 20,659 EUR | 74,750 CHF 48,258 EUR | (Bahrfeldt 49b.7) - ex M & M (Basel) 17 (1957) lotto 346 |
| NAC 70 (collez. "of a student") | 16/5/2013 | 168 | SPL | 8.07 | 80,000 CHF 64,421 EUR | 259,600 CHF 209,045 EUR | ex NAC 31 lotto 6 |