Again from the biography of Rabbi Moshe Feinstein found in Igrot Moshe Volume 8 (emphasis added):
Many approached [him] for ordination, and he was not difficult on them. Some ordinations were anticipatory, in the hope the student would later be fit for issuing rulings (psak); some were a matter of honor, for those who had studied a great deal and needed something to show for it; some included written instructions not to ever issue a ruling.
What would that type look like? ("The semicha that wasn't?"). Was that caveat in the original document, or a second one?
(And would anyone who held one of these confess to doing so?)