Apr. 8, 1962 - The 1,179 prisoners seized in the invasion of Cuba a year ago have been convicted of treason. But the Castro regime is offering to free them on the payment of a total of $62 million in ransom. The verdict, which called for 30-year prison terms for the captives, was reached tonight by a military tribunal. The ransom for the individual prisoners ranged from $25,000 to $500,000, the latter for each of the three invasion leaders. They are Manuel Artime, once a lieutenant in the Castro revolutionary army, who was called the overall invasion commander; José Perez San Roman, once an officer in the army of the former dictator, Fulgencio Batista, and commander of a battalion of invaders; and Eneido Oliva, commander of the invasion’s artillery battalion.