There seems (to me) to be a very extensive die-break across the obverse of this 1919 nickel.


Is this common or rare for this series, please ?
What is the mint/where is the mintmark ?
There seems to be an incuse F below the date - what does this signify ?
What grade would you assign ?
What would be a fair retail price ?
The coin belongs to an old lady, and there is a coin collector interested in buying it.