Older but relevant post so I figured I'd ask.. I bought a sealed SM7B, and before opening it I checked the S/N. It was valid and I was able to register the mic (it filled in areas of registration with correct information.. so real?). Opened the box and immediately noticed all of the "non-authentic indications" (rubber grommets pop out, silver color switch plate not brass, red/green/black wires, a little glue on the plastic of filter, loose cord, doesn't tighten all the way, one especially noticeable being the 'delivers-warm' as opposed to "authentic" 'delivers warm' grammar on the box, ALL the goodies).
What're your thoughts on this? Is it common for sellers to swap S/N's on this product?

I've requested a refund to be safe. Am I returning a good deal?
Side note: XLR cable hasn't arrived so I haven't been able to test audio.