Could it be Asian black?This appears to be a Moroccan Greek, Testudo graeca marokkensis based on shell shape, head and other features. The shell is nearly black which is unusual, usually there is at least some yellow. Is it possibly painted or just very weathered?
No Tammy. It's not big enough, especially being 70!Could it be Asian black?
He's never been painted as far as we're aware, but he is about 70 years old so it could just be signs of age?
Given his age, he has likely had some kind of oil applied to his carapace which has blackened over time. This video shows you how to go about removing it safely if you wanted to have a go