Black dial breguet numerals auction check

Hello everybody, I have found this Omega that will soon go for auction and I just wanted to double check if everything looks fine with it. I have tried using google image search for comparable models but I found nothing. Just want to confirm originality of dial and case and if they match, as well as a fair hammer price considering everything. Also, I assume the crown is not original. Watch is listed as gold filled 14k. Buckle not original and same with strap. No photos of movement but stated it has a working hammer movement.

I would like to just add that I found a similar dial online (redial), however the 5 marker looks different while all other numbers look the same, why could this be?