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The Vacheron Constantin Aronde & its background
Vacheron Constantin Les Historiques Aronde 1954 ref. 81018 was first introduced in 2010 in a white gold version limited to 20 pieces for the Japanese market.
In 2011, a non limited rose gold variant was launched.
This reference was inspired by four previous models from the 1950s and it was named after the wings of a swallow ("aronde" being an old French word for swallow).
Let's dive in!
Best, Emmanuel
A/ Les Historiques Aronde 1954 ref. 81018
Case: 31.20 x 44.5 x 9.8 mm
Movement: round calibre 1400 AS. NB: whereas the vintage models had a proper shaped calibre, the newer ref. 81018 was equipped with a round calibre.
1/ Ref. 81018/000G-9559 in white gold limited to 20 pieces


credit: Commit Ginza (1-6), @wristlife (7-8), jackroad and betty (9) & small luxury world (10)
2/ Ref. 81018/000R-9657 in rose gold
The Aronde 1954 (left) with the Ultra-Fine 1968, ref. 43043 (right)
The watch with calibre 1400 AS

credit: the eclecticum & watchbase (last photo)
B/ The original "Aronde" from 1954, ref. 4984
Case: 24 x 39 mm & shaped caliber 435/3C
1/ Example with "striated quarters" perpendicular to each other
Ref. 4984 (right) with ref. 4897 (left)

credit: aircooltime
2/ Examples with other dials
Without pattern
With hobnail pattern

credit: watchviews & antiquorum
Calibre 435/3C

credit: lorologiese
C/ Ref. 4591 "The Hour Glass"
23 x 39 mm, cal. 435/3C
1/ Pink gold with guillochΓ© dial
2/ White gold with diamond indexes

credit: Watchpool
D/ Ref. 4775 "Butterfly"
21 x 40,5 x 9 mm, cal. 435/3C
1/ Yellow gold

credit: Phillips
2/ White gold with diamond indexes

credit: antiquorum
E/ Ref. 4739 "Topolino" (Mickey Mouse)
26 x 37 mm, cal. 435/3C

credit: antiquorum
BONUS: Swallow's wings ("Aronde" is an old French word for swallow) and the Simca "Aronde" from 1959

credit: Daniel Knaggs & wikipedia