
The watch looks original, but I am guessing you are thrown off by the gap at the top left of the crystal. Pictures would have benefited from the crystal being popped out, cleaned/polished and glued back in with a full line of clear cement. I think a fat line of clean glue beats a skinny groove of dirt, particularly under magnification.
The seller's a nice enough chap....maybe someone mentions it too him and he decides to touch it up.