You can view scans from the BESTFIT #111 Encyclopedia of Watch Material published in 1961 of all UNITAS wristwatch movements by clicking on the hyperlinks at the thumbnail images below.

Curiously, the list does not include any pocketwatch movements, so the 6497 and 6498 are not listed here.  Note also that Unitas did not manufacture automatic movements.  UNITAS, ARSA and Auguste Reymond watches with self-winding movements used automatic movements from other Swiss manufacturers.

Caliber List Pg. 1

Caliber List Pg. 2