Presently, there is a Longines 13ZN (ref. 5415) listed for sale on eBay. While the watch is advertised as a "Parts Watch", the dial is described as "original and has not been refinished". Unfortunately, the dial is not original and has been refinished. The font of the signature is an obvious giveaway, as are other details such as the sub-dial fonts. The silver dial foot, in conjunction with the typographical anomalies, acts as further evidence. Additionally, the pusher tubes look unusually clean, the crown is incorrect, and a number of the hands are incorrect. The listing: https://www.ebay.com/itm/115661795939?hash=item1aedfaf263:g:OwoAAOSw4MBjtGSd&amdata=enc:AQAHAAAAkGTEk8hak4Ls2jQSm2ndGLrOAmSaoeL6JRzv7ZuGSEOs+Y20FtVswlspPcUmDu+vqunTGVHYaDUG2zGk7u8EUV839+W2pjMFQEyITrvVZmHYzcxJGRzErUq+KduEmaQiU4ikRShEc1mUrnvYJaC7bGK06KZnPyW3E2r+JiedrLHPijKU4/rEHcZRKJrnxWsbPQ==|tkp:Bk9SR9L9pZ6vYQ Below is a comparison with another example from the same order (23'020) that was offered by Cars and Watches. It should be noted that the chronograph second hand on the Cars and Watches example is not typical for a ref. 5415 that was invoiced in 1946. The circular counterpoise is more typical of chronographs from the early 1940s and before. https://www.carsandwatches.com/watches/rare-longines-13zn-doppio-linguetta Below is a comparison with another example of a ref. 5415 with a different dial variant. This one is presently for sale on eBay. The example on the left has a typical chronograph second hand. https://www.ebay.com/itm/233931574857 Maybe @Radiumpassion can comment on the pushers?