A wide nib slit is no necessary defect feature; the wider the slit, the higher the ink flow. From the factory the slit is, however, not so wide, so the piece described was presumably set by the previous owner for a saturated ink flow. Without macro shots of the tipping or a writing sample, the condition cannot be reliably judged. With an internet purchase without writing sample, it is therefore recommended in case of doubt to switch to pieces whose condition is clearly documented; regular 149s are anyway frequently available.