An inductor would make no sense. If A14 stayed high for any length of time (such as when executing code in the selectable bank region) A14 would be shunted to ground and pull A14 low hard, and potentially draw excessive current from the CPU's output transistor in the process. I have however seen capacitors in that kind of package, even if they are rare.
I've asked the guy to open the cart and note the colors of the bands, but he said that would have to wait a couple of days. But I figured maybe someone here would have a cart with this component on it.
Hmm, missed the A14 bit somehow. That would make no sense indeed.
If this is a pull down resistor, then when does the address bus go floating?