The coin is in rough shape. The giant nick out of the rim indicates forceful mechanical damage. The 'extra metal' blobs on the queen's cheek probably came from that mechanical damage. This means that the blobs appeared after the coin left the mint, and coins damaged after leaving the mint have no extra value.
There is a type of 'extra metal' error that occurs at the mint. It comes from a die break, as explained on this page:
and such coins can be valuable, as explained on the page above. If your coin comes from a die break, there will be evidence on the back of the coin. If the back of the coin shows deformity in an area that corresponds to the queen's cheek, then it is an 'extra metal' error and is worth a few dollars to collectors. I'd guess $10 to $20 US dollars.