His glove has an opening through which you can see his hand. I have zoomed into the photo and seen the pink of his hand through the opening and the fastening of the glove, and I have searched online and found that parade gloves with this kind of fastening are freely available to buy. If anyone still things he would turn up on parade with dirty gloves, they can do see the same evidence that I did. If it is any help, two brands of gloves available on Amazon are Rothko or Dart.
Any more criticisms to air? Did the wind blow his hair out of perfect smoothness? Did any dust fall on his polished shoes between the limousine and the ceremony?