Where there is no symbol Christie's generally sells lots under the Margin Scheme.
The final price charged to Buyer's, for each lot, is calculated in the following way:
24% on the hammer price of the first € 110.000,00
18,5% on the hammer price for any amount in excess of € 110.000,00
G. Ballo, Fontana, Torino, p. 81 (altro esemplare illustrato)