That is a letter P that has been flattened by circulation. When it was first struck, the post on the die that forms the center of the letter P likely was broken and so that part of the letter was filled in when struck. These are fun to see, but pretty common and don't typically command a premium.
"If you climb a good tree, you get a push." -----Ghanaian proverb
"The danger we all now face is distinguishing between what is authentic and what is performed." -----King Adz