Speedmaster mk2 ref. 145.014 identification help

Hello All. I came across this strange (to me) Omega (in a small town antiques store) that appears to be ref 145.014. Unfortunately we couldn't open the caseback to see the movement or what is inside the caseback. I took some photos of it though (could've been better/more I realize) before heading onwards.

While it looks like mk ii to me, the dial does not have 'MARK II' on it, and indeed it appears that the dial 'base' has come off and bezel has rotated a bit (or changed?) - however lume is dirty enough on both sides / matching colour so what ever is going on there doesn't appear to be a recent thing. Bracelet end links are marked 148 which according to this OF post wouldn't necessarily be wrong for the 145.014.

So what was I looking at? Collection of parts, or even a fantasy watch maybe?

Thank you. That makes sense. I didn't know you can swap the Speedmaster dial in like that to an mk ii. Unfortunately they didn't have tools/want to open the caseback so I guess we will never know. Makes you wonder though if they know that the dial has been swapped... <shrug>

Hi
As the others have said, it’s the wrong speedmaster dial for this case. What was the asking price?

Regards
Chris

I wasn't going to buy it so I didn't really get into the price conversation, but he indicated around 2500EUR and mentioned that he has a receipt for a full service done a few years a go (didn't ask where) and that he has had it himself for a long time but is now selling it.