That is a nicely finished watch. It certainly looks like the real deal.
I have had many SMPs mainly Frankens. I still have my original 2220.80 $95 Ali rep. I did decide Gen was the only way to go on the 2531.80 after buying a Franken and then amassing the parts to build a Super Framken. I was $900 I think in and still did not have a gen case or gen movement, so I abandoned mint. The parts may be harder to get now but they are certainly cheaper.