Hello Vintage Jaeger-LeCoultre Lovers,
I am back with just a small observation…
If someone mentions JLC case backs to you, what do you think of?
I think many would think about open case backs…
Me – one of the first things I think of is the planet-sphere!

AFAIK, the Geomatic was the first watch with the golden medallion on the back.
The medallion on the Geomatic was inspired from the Geophysic that had a sticker on the back.
Photo credit, Nicolas.

The planet-sphere came from the IGY, 1958.
Scan credit, Nicolas.

This planet-sphere gold medallion has been used for over 40 years on different JLC watches.
Last series that used the golden medallion was (AFAIK) the Master Compressor series, discontinued just a few years ago.
Here is the Master Compressor Memovox.

Over the years the golden medallion evolved and was used on many different watches with solid case backs.
Like the Master Control.

Also in different material, here shown in YG on the Master Revéil.

BUT, did you know that JLC started to use this symbol much earlier?!
1937 in this Jaeger ad a planet is used as a symbol of… Time?
Jaeger, French ad, 1937.

The latest series of watches from Le Grand Maison using planet-spheres on the back is the new Master series.
Master Memovox International.

Now the golden medallion is gone…
Too bad – a detail I am really fond of.
But the planet is still there - or IS it?!
If you look real close on the photo and then look at this old ad from 1947…
Jaeger-LeCoultre, French ad, 1947.

You will realize that the designers at Jaeger-LeCoultre did go back much longer then 1958 to find inspiration for this one!

Thank you for reading Part #4 of this Vintage Ads Series.
Hope you enjoyed!
Best
Blomman
Vintage Ads: The Series – Intro!
Vintage Ads: The Series – Part #1 Futurematic
Vintage Ads: The Series – Part #2 Memovox Pocket Alarms
Vintage Ads – Part #3 Electronic
This message has been edited by amanico on 2011-07-02 11:55:47... I'm thinking of something like this:
However, after reading your post I might be changing my mind.
Excellent article!
gatorcpa
The Gyrotourbillon and the Duometre.
Best,
Nicolas.
Yes, another beautiful and significant trade of JLC and their case backs!
As I understand JLC have patented this pattern for movements decoration.
Thank you, Gatorcpa – hope to one day join you in the MMR club!
Best
Blomman
The planet sphere is certainly one element of JLC DNA.
It is very interesting to see the evolution of the planisphere design through the byears.
The one from 1947 is without hesitationj my favourite. No wonder why I love the one on the new Master Memo case back so much!
Best and thanks for such a great post.
Nicolas
I was very surprised when I saw this one and made the connection!
Was actually planning to write about another topic when I saw this…
Indeed the Planet-Sphere is a part of the JLC DNA!
I hope it won’t get lost…
Thank you for your kind words and the reference post honour!
Best
Blomman
This message has been edited by blomman on 2011-07-03 02:37:36And IMO, a very intimate detail as you normally don’t show to others.
A detail just for your own pleasure!
Thank you, J !
Best
Blomman
The actual Globe!
On my hunting list for some time now…
A question of clarification: the electric cord is it for the lamp only or also for the movement?
Marv, as I know you are a connoisseur in old ads and documents it makes me very happy you like this one.
Thank you!
Best
Blomman
I have read earlier that it has an 8-day movement.
But when I saw the electrical connectors I got worried…
Best
Blomman
As a Jaeger fan I really apreciate when those of you enlighted share your hard earned knowledge with us mere mortals
Master Compressor Memovox is one of my favourites (Now that it's been discontinued, I have an eye on one...but don't tell anyone), and that hidden medallion is part of the charm...
It always appeared such a beautiful detail to me.
Now I know more of it.
Thank's really!
Best! René
I hope you find your MCM!
One of my favourite modern watches, actually she is my daily beater!
A lady you can dress up or down depending on your mood…

Thank you for your kind words!
Best
Blomman
In the world of JLC a lot of “hidden” pleasures!
Almost like an archaeologist you have to look under every stone to get the whole picture!
Thank you, HS – hope you have a great Sunday!
Best
Blomman
)Especially like in your case, a parade of Grail watches in front of your eyes!
Happens to me every time I am in Paris…
I am thinking about asking the French government to ban me from French soil!
At least that is what my heart doctor is recommending…
Best
Blomman
Yes, in the photo is my Geo duo..!
Best, my sharp eyed friend!
Blomman
)Yes, I love the MMI medallion too!
But imagine if it was in RG..?
Best
Blomman