I've seen the slotted shrouds and the non-slotted (just a hole) shrouds sold on auction sites as genuine 62's and wondered if mine was original because it's slotted. Did the slotted version of the "3 holes per side" SB shroud possibly come out mid way through 62 production or were they specifically a 63 model year shroud?

I should also add that it's possible that my shroud was wrecked in the front crash that my car suffered in the early 70's and was replaced with whatever shroud was available, because the parts for the smash repair were second hand.