More than likely it will be noticeable. You'll probably notice a color difference in the fabric, as the areas that are embroidered have been protected from the elements all this time. Unless what your replacing it with is similar in size, you will probably notice the area where the old embroidery was. If it's glued on ......good luck. It's normally a mess getting it off.I would take it to a professional embroidery shop and ask them for options, preferably someone whose got a good reputation.