I know a Greek guy in New York and he was just telling me that he used to take Olympic Airways to and from Greece. He said that it was Aristotle Onassis's airline ... I didn't know that. He told me they had a 747 named Olympus and another one named Zeus.
Olympic never put out much of a reach to North America ... just NY and Toronto, I believe. They bankrupted sometime post-9/11. Now, Greece only has much smaller Aegean, but they stick mostly to Europe, the Middle East, etc.
Here's one of their 747s approaching Athens Airport next to the sea at Ellinikon.
In looking up this airline and jet, they had a write-up on Olympic Airways Flight 411 which was using the 747 Zeus in 1978, so this was a fairly new unit. Fairly shocking for a veteran crew - 418 people on board - close call ...