Omega Seamaster Cosmic 2000…Authentic?

First post! I recently purchase a vintage Seamaster Cosmic 2000 (pics attached) and wish I would have dropped the pics here ahead of time for collaboration. Watch is currently in transit but a couple of things have stuck out to me about the watch that have me concerned/perplexed. I have not been able to determine the exact model to be able to compare so I’m hoping for some help. Here are the concerns I have at the moment (there are probably things I’m missing too):

(1) The “G” in Omega looks a little different than most I have seen…but I also see variety in my searches.
(2) The “M” in automatic is not slanted…I have seen both slanted and not.
(3) Caseback is pretty scratched…I can’t make out the typical seahorse logo but I have seen some casebacks that do not have the seahorse.

Thanks for any help and recommendations about service, etc!

I don't see any problems other than the case has some wear. Polish the crystal and wear it.

I'm pretty unfamiliar with Cosmics, so I can't comment on the unusual font, but the lume on the dial is pretty convincing evidence to me that it's original (or a pretty old redial).