The movement and dial seem correct, the crown has been replaced and a new hexagonal crown has to be sourced. The bracelet might be adapted from another model, I can’t tell for sure.
I agree with this assessment. I also don't see the Omega sign on the crystal so I'm assuming it's a replacement crystal as well. Pic below of the one I'm wearing today.
From the photo, I'm assuming it's a Japanese seller (probably Closer). The dial has some spots but I like the watch once it's serviced and cleaned (it's filthy in the photos). The case back looks like it's been polished in the past but you can still see all the stars. Remember to factor in the import duties of you're buying.
I think this is a better example at a better price. It's a 167.005 instead of 168.005 though so no date function but it's still a pie pan.
https://omegaforums.net/threads/1968-omega-constellation-pie-pan-ref-167-005-cal-551-1250.166550/