It all depends on how much you know about vintage Rolex, how neurotic you are & how much money, time & effort you are willing spend to placate your neurosis.
Euro's watch gets the general 6538 theme right, but most of the details wrong. As is, this watch should fool anyone who knows little or nothing about vintage Subs, but is likely to be spotted as a fake by anyone who does. The basic features of a 6538 are all there, but not in their correct form (incorrect colors, sizes, fonts, shapes, locations, etc).
The dial colors & fonts are close, but no horseshoe
The crystal is the wrong shape, the pearl should not have a metal surround, the insert fonts are wrong. However, the middle case, if the dimensions are correct (38mm x 15mm), might work but I would swap out the original 'fast beat' ETA for a 'slow beat' ETA 2846
The caseback is incorrect & the bracelet looks fake (& is famous for falling to bits upon arrival)
Were it me, I would replace the dial (Yuki), crystal (gen) bezel/insert (CWP), 8mm Brevet crown/tube (Yuki), bracelet (Yuki) & case (Yuki) & gen 1030 movement. This would set you back at least $2,500 plus the cost of labor to service the movement & assemble the parts. However, for an off-the-shelf rep, this is probably as good as it gets.