I don't think it did. It was just a gasket, no metal or anything.
If you have a sender in the housing above the gasket, you need the marine gasket which has a metal button to provide a ground. If no sender in that location, you are OK. There are also a number of variants and revisions to that cooling system over the years to add confusion. I just went through this. seepage and all, on our old Century Resorter w/ the same motor. After talking to a few folks w/ experience, I finally settled on the Mercruiser gasket set w/ Permatex High Temperature RTV as a dressing. Unless your housing is really warped, some smoothing and this should be good.
What type of boat?