Makes you wonder how long ago someone took a bite out of it... if the bite was taken in the 1880s, does that mean the card can get a numeric grade? If the bite was recent, then it could only be given an AUTH label...
Reminds me of a story....
In 1984 I purchased a few Topps wax baseball boxes. I stored them in my garage. Fast forward about 20 years. I see my son has a stack of 1984 cards on his desk. He was under 10 years of age at the time. I asked where he got them and he told me in the garage. I asked about the gum, he said he ate it and it was ok..... no, I didn't try it...