I recently picked up these Polo penny loafers at a thrift shop and I couldn't find any markings indicating the country of manufacture. Maybe somebody could shed some light on it?   The only readable markings on the inside are the size (91/2 D) and a number M5169. There is a very faint Polo label on the sole, but no other writing that I can read, the soles are pretty worn. I wouldn't have thought much of these when I saw them if not for the nail pattern on the...