On a flat map, it appears we can get to Qatar. My apologies if I'm too optimistic or overly optimistic. A 2000 50-dirhams from Qatar (KM 9). EDIT - as usual, coin_nut beat me to the punch. But I am certain we can get to Qatar from Saudi Arabia!
Is this coin appropriate? It's Canada today but back then it was a British colony. If one carefully angles it just right through the Gulf of St. Lawrence, it appear on a flat map that one can get from Newfoundland to Prince Edward Island. Prince Edward Island, 1871 one-cent (KM 4).