Just a warning, the watch below does not have an original dial.

Source: https://www.ebay.com/itm/1157334640...c6uwHiKIAYDSq7sB2UDo68zs4b|tkp:Bk9SR5jSqtzeYQPurchases made through these links may earn this site a commission from the eBay Partner Network





Here is a comparison with an original and correct dial for a ref. 3582 with a caliber 15.68Z.

Source: https://www.antik-hodinky.cz/letecke-hodinky-longines-s-napisem-majetek-vojenske-spravy-e-c-2817

 

Once, years ago I bought one of these, the dial was a picture/print of a dial stuck on with paste., hence the seller’s blurry eBay images.
I can laugh about it now

 

The hands are different too… not that I’d know what’s right or wrong.

 

Yikes!

For some reason, the non-original dials that I have seen in these are usually quite poorly done.

 

What do you see that tells you it's fake @DirtyDozen12

 

There are many little details that are off. I would start by looking closely at the signature and comparing it to an original one. You will see that the letters "ongines" are too large relative to the "L". You will also see that the spacing of the letters is too close. The "g" is the wrong shape, with the bottom being smaller than the top. Neither "n" is right, with the preceding letters connecting in the middle rather than at the top.

 

...and the 4 , the 9 and the 7 and ...