UNCANNY X-MEN (1963) #16

The X-Men had been arrested by the Sentinels and prof. Xavier is trying to find a way of defeat them. Dr. Trask is forced to make more Sentinels by the Master Mold. The X-Men manage to escape, and when they are almost being defeated by the Sentinels, Xavier discover that a giant crystal will make them to collapse, and use it with the help of policemen in a chopper above Sentinel’s base. Dr.…