The colour of the coin looks dull. It looks like someone did something to the surfaces of the coin to try and get some colour out. Also, you will see dirt build up in small spaces (like in and around the letters, numbers and the leaves and queen's portrait). That means whoever cleaned did not try to get the junk out from the small spaces (with a toothpick or cotton swab), but instead did a quick cleaning then wiped it with a rag/towel (a rag/towel can't get into those small spots). This shows more on the 1882, but also on the 1887's reverse