I believe you are correct:
The Fantastic Four Golden Record Reprint (28-pages, full-color, standard comic format) was produced in 1966 and reprints Fantastic Four #1. Although the reprint, at first glance, looks like the original, there are differences. There is no cover price on the reprint, and the back cover, as well as the inside covers, promote the Golden Record LP series of which the Fantastic Four #1 is a part. The four Marvel Golden Record LPs came with a reprint comic, and each originally sold for $2.49 (record and and comic together).