Weitzan, graduated in engineering, flew in the air force, owned a sporting good stores and fairly familiar with rifles because he was "in the sporting goods business awhile"
Finds the assassins weapon
He identifies of the rifle declaring that it was a 7.65 Mauser, with a 2.5 Weaver scope.
The next day someone discovered that it was a 6.5 carcano with a cheap Japanese scope
testimony
"Mr. WEITZMAN - And at the time I looked at it, I believe I said it was 2.5 scope on it and I believe I said it was a Weaver but it wasn't; it turned out to be anything but a Weaver, but that was at a glance."
At a glance it looked like an apple but it turned out to be a banana.