No Brunswick nameplates anywhere make it unlikely it is a Brunswick.
In any event, it is definitely not a GC4. The GC4 does not have score counters in the foot rail. Also, in that first pic you can see the ball storage. The GC4 has Brunswick badging on that plate in the middle of the tray. I don't see that in the picture which makes me wonder if it is any Gold Crown version. My GC4 says Brunswick on the plate and has the pool player stick figure logo. I've seen earlier GCs where the logo on that plate is the capital "B" in the Brunswick font.