A thing I recall about communicator authenticity...
They are supposed to be gold, real metal, and have an attractive appearance (they are not just gadgets, but service insignia).
But the actual props used on the set were NOT that.
Real metal finish would catch glare from set lighting (see, there was no LENS FLARE on TNG). So the actual props were dulled down. Looks good on camera, in person... not so much.
However, you can get communicator replicas that ARE gold (or gold finish) that look much nicer and represent what the communicators were INTENDED to be.
So you got your choice of preference.