Yes, on that picture from fold3.com it appears that something was painted over. Unfortunately, it is no longer visible in other pictures of the machine, but it can be seen that something of the front part was repainted/repaired. The machine looks like it has been repaired more often
Your picture on fold3.com
https://www.fold3.com/image/29021898...t?terms=me,262
Stains on the front of the machine
https://i.imgur.com/4SuX0ln.jpg
https://i.imgur.com/Gc5aCkp.jpg