Cracked Die not Planchet. The die cracked so the metal from the blank flowed into the crack when it was struck.
Also.. I believe it to a Clashed Die. You can see a slight image of the Reverse side on the field of the Obverse.
IMO, the die crack neither adds nor reduces the value. The coin is worth whatever a standard 1911-D in that condition is worth
I really like coins with cracks and clashes. Makes them a bit more fun. Some don't feel the same and don't care for them.
Thanks for everybody's replies. I was also worried about cleaning, but it looked pretty lusterous. Unfortunately, I don't have the coin, just the pictures, and I know people can do all kinds of things with photographs. In the end, I passed. Wasn't a good enough deal to risk getting burned. Thanks