13ZN Chronographs Inquiries and Information.

Sold in 2006 for CHF 21.600: https://www.christies.com/lot/lot-l...00397/?from=searchresults&intObjectID=4700397

Don't think they did condition reports then

« Hammer price » so excluding premium.
That’s a staggering increase in 3 years or so 😲

The dial has been refinished. Also, 3288 is the order number. This looks to be a reference 5041.

Looks like the same person refinished this dial:

Nice catch 😁 Ref 3289 sold by https://www.sothebys.com/en/buy/auc.../reference-3289-a-stainless-steel-chronograph for USD 2.520

Do you have any movement photos? Also, I would guess that 3289 is the order number. The reference number should be higher.

No. Just posted the link and had no other contact with the auctioneer. These online only auctions are really becoming a smash and grab business model for the big auction houses. Spend as little as possible. No watchmaker to open up watches, let the intern do the write up. But hey: it can always be worse… Enjoy:
https://www.invaluable.com/catalog/kz3ridoeh9?size=50&page=4&categories=

@EdtheAussie You are right, most 13ZN dials do not have sub-dials like this. The more typical designs are marked 10, 20, 30, 40, 50, 60 (seconds) and 5, 10, 15, 20, 25, 30 (minutes). There are, however, certain reference that commonly have sub-dials like this, such as ref. 5415. Comparing the two, I notice that the difference in length between the short and long hash marks on the dial in question is more pronounced than on original 5415 dials. This is not necessarily a red flag but it is noteworthy. I also notice that the edges of the sub-dials on the dial in question appear a bit more rounded than the sharp edges of original dials. This is quite subtle and possibly an erroneous observation that is due to the photography.

Moving onto the signature, I believe that the "S" is not quite right. Again, this is quite subtle but possibly more telling than the soft sub-dial edges.

Next, I think that the telemetre scale has a few problems. Firstly, the letters of the word "telemetre" look vertically compressed and too closely spaced. Secondly, I would expect the 5s and 3s to have flat rather than curved bottoms, as seen in the seconds scale. Thirdly, while a capital "M" in "KM" can be seen on some original 13ZN dials, a lower case "m" is more typical.

Looking at the movement shot, a silver-toned dial foot (as opposed to copper-toned) is not a good sign.

Putting it all together, I believe that this is a redial. However, I agree with @minutenrohr that it is quite well done, especially the seconds scale.

P.S. I wonder if there is too much space between the telemetre and tachymetre scales.

I agree with @minutenrohr that this style of dial is more indicative of a later 13ZN (from the mid-late 1940s) than one from the 1930s. For example, 13ZN dials with sub-dials that have just three numbers (as opposed to six) are not typical of the 1930s or even early 1940s. The serial number of the watch in question dates the watch to circa 1946.

This one sold yesterday for EUR 2.300 excl. 23.69% at a coin auction in Italy: https://www.biddr.com/auctions/nomisma/browse?a=1784&l=1937489. No reference mentioned but described as 35mm