That Greco II in Japan looks interesting and the price isn't bad.
The Greco in Italy with the road worn refin job is pretty pricey and fairly suspect as well. Frequently a refin on a vintage TBird is associated with a headstock break. Dont know if this one was broke, it's not mentioned. To the best of my knowledge the '77 Greco used a Gibby style three point bridge with a claw tail piece not a vintage TBird two piece. I don't think the tone cap is stock, nor is the wiring. That makes the pots and pup suspect as well. And that bass is all about the pup and it's associated wiring.
Too many unknowns (year, headstock, pups and pots) and non original bits (bridge, tone cap, refin) for my taste. If the seller dropped the price by about a thousand dollars and offered free shipping I might be tempted to take a risk, but not as it stands.
I will say, the road worn refin job looks first rate if you're into that look. Unfortunately, the person taking the photos didn't do his sale any favors. Looks like he placed the bass inside the red lined case so the very cool and creamy aged white took on a pink hue - yuck. It looks like a raw ham steak. The close up pics show the real color and beauty of the bass and refin.