Speedmaster Authentication Help, Please! (3572.50)

Hi All- I’m new to the forum and would appreciate help in reviewing a watch for authenticity. It is the 3572.50 model with a hesalite front and sapphire back. The seller, based in Hong Kong, has been responsive and sent extra pictures upon request, including proof of the omega logo on the Hesalite and a picture of the box. One question is the lack of information on the warranty card, which they attribute to the watch being sold to a second hand dealer so the AD never filled it out. The seller claims the watch is mint, has never been polished and is 100% original/authentic. Your expert thoughts would be appreciated! Also, any opinions on a fair price would be helpful.

I used to have one of these, great watch. As for it not being polished it’s tough to see in those pics & fair price would be $3300-3500 I imagine. Never seen a blank card like that before, but I’m sure the experts will chime in. Merry Christmas everyone.

Not the finest quality pictures, but the watch looks genuine to me. My guess is that the seller got the watch and the box + card separately (the box is much more worn than the watch?) in order to sell is as a composite "full set" but I could be wrong here.