If you bought a certain amount, you could get your OEM logo put on them. GM and Ford did similar in their HP Parts books. GM even had OEM part numbers on MSD engine controllers, at one point in time.
In the case of the tach, that was probably done in the later-mid '60s so all of that could be had from a local dealership rather than from a "far away" speed shop vendor. In the case of the later AutoMeter items, Ford and GM did similar. In those prior decades, Jeg's was probably still a small, one-store business on the eastern side of Columbus, OH on old US40. Summit hadn't been thought of yet, nor had Super Shops.
CBODY67
