<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: Day2_69Z</div><div class="ubbcode-body">2 different fonts and the # spacing apart from 1100 ....? come on !
and the grind marks ? </div></div>
That's 100% real. I am going to assume that the "grind" marks are just from a tool adjusting the alternator when it's in place. Corvette HP alternators from this era all had "strange" looking stamps.
Here is a 1970 LS5 Corvette stamp for comparison.