Quattro's meticulous post, "The 'Neptune' enamel dial by Nelly Richard & Stern Frères," offers an exhaustive reference guide to a rare and historically significant series of enamel dials. Documenting examples found on both Omega Seamaster and Rolex watches from the early 1950s, this article provides crucial insights into their variations and provenance. The accompanying discussion enriches the original content with expert commentary on the production practices of Stern Frères and the artists involved.
During the early 1950s
enameller Nelly Richard and renowned
Fabrique de Cadrans Stern Frères of Geneva
produced a
small quantity of
dials (probably just a little over ten) depicting
Neptune riding his chariot.
Most were mounted on Omega Seamaster watches, but a few were on Rolex watches.
Let's have a comprehensive look.
A/ OMEGA SEAMASTER 1/ EXAMPLE FROM THE OMEGA MUSEUM IN BIEL/BIENNE (
link)
Applied Omega
logo at
6 o'clock & “
Omega Automatic” below
credit: watchphotos.com2/ MOVEMENT NO. 12'337'146 Applied Omega
logo at
6 o'clock &
no text below
No painted minute markersSold by
Antiquorum
credit: AntiquorumThe
following photos are
probably from
another example (authentic?), but, like the example above, there is
no text below the applied Omega logo at 6 o'clock and
no painted minute markers.
credit: tokeibakai.exblog.jp 3/ MOVEMENT NO. 12'337'147 Applied Omega
logo at
6 o'clock & “
Omega Chronomètre Automatic” below
Sold by
Antiquorum
credit: Antiquorum4/ MOVEMENT NO. 12'430'172 Applied Omega
logo at
6 o'clock & “
Omega Chronomètre Automatic” below
Sold by
AntiquorumNB: as
jmousey suggests in his
comment, the
authenticity of this one is really
questionable.
credit: Antiquorum5/ MOVEMENT NO. 13'232'096 Applied Omega
logo at
6 o'clock & “
Omega Chronomètre Automatic” below
Sold by
Christie's &
Antiquorum
credit: Christie's & Antiquorum
6/ MOVEMENT NO. 13'232'097
Applied Omega logo at 6 o'clock & “Omega Chronomètre Automatic” below

credit: Christie's
The “
live”
photos below seem to belong to the
same example, but I'm
not certain.
credit: @havanasun 7/ MOVEMENT NO. 13'737'795 Applied Omega
logo at
6 o'clock & “
Omega Chronomètre Automatic” below
Sold by
Sotheby's &
Bonhams
credit: Sotheby's & Bonhams8/ THE ONLY ROSE GOLD EXAMPLE? All the
examples above are in
yellow gold, whereas
this one is in
rose gold.
It was sold by Christie's in Hong Kong on May 28th, 2018, but it isn't listed anymore on their website.
Applied Omega
logo at
6 o'clock & “
Omega Chronomètre Automatic” below
credit: Phillips, Sjx & Christie's3/ REF. 4645
credit: Phillips
Thanks for looking.
Best, Emmanuel