Our local glass man thought it might be part number 39379. Could not get a ladder to fit in to get up to see part number. So sending you picture of the fixture and crank head.
Casey from SWISCO responded:
June 28, 2022
Hello,
Your skylight operator certainly resembles our 39-379 but you would need to compare the specifications shown on our product page to be sure if it's a match. Thanks for posting!