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:
30% of the final bid price of each lot up to and including € 5.000,00
26% of the excess of the hammer price above €5.000,00 and up and including € 400.000,00
18,5% of the excess of the hammer price above €400.000,00
G. Sestieri, I Pittori di Battaglie. Maestri italiani e stranieri del XVII e XVIII secolo, Roma, 1999, p. 480; p. 483, figg. 3-4.