He has 2 marks on either side of his lower jaw from poking and prodding between the tub and the rack.  I've seen this on a number of snakes over the years and luckily, it never seems to get worse or cause any health issues.  It just doesn't look perfect.  I've priced him at a discount to reflect this.  If you are seriously interested in him, I'm happy to send you a photo so you can see the marks.