Yesterday my "new" Longines has arrived. When I saw it I just loved the pure case & dial design!!
Found it on ebay, bad fotos and description, lots of patina/heavy worn dial... so I managed to get it for a reasonable price after a short battle in the last seconds of bidding.
The coin edge case has 35mm diameter and nice thin & fixed lugs..

Inside there is a good working cal. 12.68 (maybe missing 2 screws at the holding ring), keeping time very good.

Caseback has some scratches and inside there is EFCO logo.

Seller pointed out that the crown is original also fitting 13zn too.

Hands and subdial looks OK for me, but what do the experts think about the dial? Here a closeup of the Longines writing.

Unfortunately there is a oil filming on the dial, so I will ask my watchmaker later today to clean it CAREFULLY if possible...
So I would be pleased if some of the Longines experts here would give a feedback and judgment concerning this watch.

Thanks and best regards
Georg

 

Looks fine from my (relatively inexperienced Longines collecting) eyes. Font looks correct, and the case looks good.

Without the patina it'd look like this:

 

Nice, but not a true "coin-edge". They have texture, like a...coin! Example:

 

The term "coin-edge case" is widely used by Italian collectors to describe Longines cases with wide, flat bezels that sit above the plane of the lugs. Here is some information: http://longinespassion.com/oldlonginespassion/Longines_Passion/coin_edge_case.html Not all coins have a reeded edge.

Watch and dial look fine. Here is a 1942 cal. 23M to compare with.

 

Uncharacteristic of those otherwise astute Italian forum members to be wrong.

Seriously, though, they can call it what they like, but the original term, ahem – coined long before their forum existed, was used to refer to the textured bezel or side of the case...

 

Tony, I've always known the above Patek to be a hobnail bezel, while coin edge cases are like the side of a quarter as Breguet does:




Your Chronoswiss example above is a good shot of a coin edge bezel.

 

Just my novice opinion, aren't we also restricting the term to a very specific time frame as well for these cases 1930s-1940s?
Anyone believe in a 13ZN coin edge?

 

That seems like a fair distinction, and it also underscores that the "flat bezel" definition is quite different from the original.

 

Back to the roots of this thread.
Glad to hear that the dial looks to be legit.
Got the watch dial cleaned yesterday and found a brown leather strap this morning.
I have read it before and now I understand that it is true. Due to the thin case design and the size of the dial the watch looks even bigger than 35mm on the wrist.
Very satisfied with it

 

Here's one with a reeded edge.

http://www.ebay.ca/itm/VINTAGE-1953...496126?hash=item4d4aaf7b3e:g:Oo4AAOSwdIFXyicNPurchases made through these links may earn this site a commission from the eBay Partner Network

 

Could also be a translation issue. The Italian term is "cassa a moneta" which as far as I can tell in my bad Italian means "coin case" but there's no mention anywhere of a coin "edge". So who knows, the word might have been used to refer to the overall flat shape of the case like a coin, which kind of fits with the flat bezel.
I've always wondered why and how it ended up being translated as "coin edge", which refers to a different reality altogether.