Seller's pictures - I'm a little iffy on the font on the dial, but do the printing on the other parts of the watch check out?
Here's mine to compare Dial fonts differ Caseback is similar What year is the one you're considering?
I would require better photographs to be completely certain though I am quite confident that it is a redial. The Longines font does not look correct. Also, the case is over polished and the crown is incorrect. Here are the fonts of two Sei Tacches that I own. 1944 - 6 697 6xx 1946 - 7 043 2xx