I have had several positive transactions with EWC in recent years, so didn’t want to start a public debate over one of their pieces. . But take a look at the small holes showing beneath the number six and the number 12 on the dial. Something has been messed with at some point along the way - maybe years ago. Shouldn’t be like that. I don’t know if the numerals were removed so the dial could be cleaned, and then the numerals were replaced, but it’s particularly evident beneath the six.
Just my two cents.
For what it’s worth, I also told the OP that for a fraction of the price of the 1579 I have a 1949 pink gold 1578 listed for sale here. That wasn’t the primary reason for my reply.
Just suggested that he - and anyone else - be careful with the one you are looking at...