Washer dropped in Distributor/oil pump hole

So here's where you are in a nutshell.

You dropped a small washer and think it went down the in the distributer shaft hole. You can't tell if it is lodged in the oil pump drive gear or if its in the pan because you can't see it.

All this "probably " talk is pure speculation.

The only way you will know if its in the oil pan is if you actually see it there.

If the washer is still in the engine and you have no idea of where it is , ask yourself one question.

How bad do I want to disassemble everything to take the engine back out and rebuild it or possibly replace it?