I thought it was a mintmark because of the location but have sense learned it is the designers intial. Does anyone know it's value ?
The images give limited scope, but I see some scratches, and grade looks to be about VG. It's probably worth 30c to 50c.
The F was on all Buffalo Nickels, without exception, although it is possible that an extensively worn piece may no longer have it. As mentioned earlier, it is the designer's initial.