quattro[Moderator]
19208
The Saltarello Prototype
Coming to auction next November (Phillips "Decade One 2015-2025", November 8, 2025) is this very unique timepiece: the Vacheron Constantin Saltarello Prototype.
The development for the Saltarello ref. 43041, combining a jump hour complication with retrograde minutes, started in 1994 with the present prototype being finalised in 1995/1996.
Its
movement, based on the
ultra-thin automatic caliber 1120/2, features a jump hour mechanism with a “
brake system” based on a minute repeater gong to
cushion the return of the minutes hand.
This "
brake system",
visible through an
aperture on the
dial, was
abandoned on the
production pieces, making this prototype very
unique.

The hand guilloché
dial is also quite
different from the regular production pieces as the
applied gold numerals and
markers and even the
logo have
hand polished rounded tops whereas
regular production pieces were
flat.


A
regular production example, for comparison.

The
prototype was first
cased in a
gold plated case
engraved Test N°1 on the caseback and between the lugs.
In
2000 Vacheron Constantin made an
18k yellow gold case specially for the watch engraved
Pièce Unique.


Another
difference with the regular production examples is the fact that the
rotor, and
not only the winding mass, is in
colored gold.
Below: a regular production example, for comparison.

credit: Phillips, @watchesbylogan (3) & Sotheby's (last photo only)
The Saltarello prototype has been consigned directly by the watchmaker who developed the Saltarello for Vacheron Constantin.
The Saltarello was officially launched in 1998 and made in 100 pieces in yellow gold and 200 pieces in pink and white gold each.
Thanks for reading.
Best, Emmanuel